UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549





FORM 10K



|x | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------------

For the fiscal year ended December 31, 2007

OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from  to

Commission File No. 000-49604





LOGO

(Exact name of registrant as specified in its charter)



|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Delaware                                                       |  | 22-1852179                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)

12015 Lee Jackson Highway, Fairfax, VA 22033

(Address of principal executive offices)

(703) 218-6000

(Registrants telephone number, including area code)





Securities registered pursuant to Section 12(b) of the Act:



|                                                |  |                                          
|----------------------------------------------- |  | -----------------------------------------
|Title of each class                             |  | Name of each exchange on which registered
|Class A Common Stock, Par Value $0.01 Per Share |  | Nasdaq Stock Market                      

Securities registered pursuant to Section 12(g) of the Act: None





Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities
Act.    Yes  x    No   ̈

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act.    Yes   ̈    No  x

Indicate by check mark whether the
registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and
(2) has been subject to such filing requirements for the past 90 days.    Yes  x    No   ̈

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained,
to the best of the registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.     ̈

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller
reporting company. See definitions of large accelerated filer, accelerated filer, and smaller reporting company in Rule 12b-2 of the Exchange Act (Check one):



|                                                                       |  |                             
|---------------------------------------------------------------------- |  | ----------------------------
|Large accelerated filer   ̈                                             |  | Accelerated filer  x        
|Non-accelerated filer   ̈ (Do not check if a smaller reporting company) |  | Smaller reporting company   ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the
Exchange Act).    Yes   ̈    No  x

The aggregate market value of the voting stock held by non-affiliates of the registrant as of June 29, 2007 was $605,792,200 (based on the closing price of $30.83 per share on June 29, 2007, as reported by
the Nasdaq National Market).

There were the following numbers of shares outstanding of each of the registrants classes of common
stock as of February 29, 2008: ManTech International Corp. Class A Common Stock, $.01 par value per share, 20,267,807 shares; ManTech International Corp. Class B Common Stock, $.01 par value per share, 14,278,813 shares.

DOCUMENTS INCORPORATED BY REFERENCE

Certain portions of the definitive Proxy Statement to be filed with the Securities Exchange Commission pursuant to Regulation 14A in connection with the registrants 2008 Annual Meeting of Stockholders, to be filed subsequent to the
date hereof, are incorporated by reference into Part III (Items 10, 11, 12, 13 and 14) of this Annual Report on Form 10-K. Such definitive Proxy Statement will be filed with the Commission not later than 120 days after the end of the fiscal year
covered by this Annual Report on Form 10-K.









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PART I

Item 1.Business

This Annual Report on Form 10-K contains forward-looking statements that involve
substantial risks and uncertainties, many of which are outside of our control. We believe that these statements are within the definition of the Private Securities Litigation Reform Act of 1995. You can often identify these statements by the use of
words such as may, will, expect, intend, anticipate, believe, plan, seek, estimate, continue and other similar words or
variations on such words. You should read our forward-looking statements carefully because they discuss our future expectations, make projections of our future results of operations or financial condition, or state other forward-looking
information. Although forward-looking statements in this Annual Report reflect our good faith judgment, such statements can only be based on facts and factors currently known by us. Consequently, forward-looking statements are inherently subject to
risks and uncertainties and actual results and outcomes may differ materially from the results and outcomes discussed in or anticipated by the forward-looking statements. The factors that could cause or contribute to such differences include, but
are not limited to, those discussed in Item 1A. Risk Factors below, as well as those discussed elsewhere in this Annual Report.

In this document, unless the context indicates otherwise, the terms Company and ManTech, as well as the words we, our, ours and us, refer to both ManTech International
Corporation and its consolidated subsidiaries. The term registrant refers only to ManTech International Corporation, a Delaware corporation that is the successor by merger to ManTech International Corporation, a New Jersey corporation.
As a result of the merger, in January 2002, we reincorporated from New Jersey to Delaware.

Business Overview

ManTech is a leading provider of innovative technologies and solutions for mission-critical national security programs for the Intelligence Community, the
Departments of Defense, State, Homeland Security, and Justice, and other U.S. federal government agencies. Our expertise includes engineering, systems integration, software services, enterprise architecture, information assurance and security
architecture, intelligence operations and analysis support, network and critical infrastructure protection, information operations and computer forensics, information technology, communications integration and engineering support and global
logistics and supply chain management. With approximately 7,300 highly qualified employees, we operate in the United States and over 40 countries worldwide. As of December 31, 2007, over 65% of our workforce possessed clearances and
approximately 41% had Top Secret or above level clearances, which are necessary to work on classified contracts.

In 2007, we had revenues
of $1,448.1 million, a 27.3% increase over our 2006 revenue of $1,137.2 million. We have grown substantially in the last six years, from revenues of $431.4 million at the end of 2001, just prior to our initial public offering (IPO) in February 2002,
to our current levels today. We derive a substantial majority of our revenues from our customers in the Intelligence Community and the Department of Defense:



|            |  |                                                                                 |  
|----------- |  | ------------------------------------------------------------------------------- | -
|Fiscal Year |  | Percentage of Revenues from Intelligence Communityand the Department of Defense |  
|2007        |  | 93.3                                                                            | %
|2006        |  | 95.2                                                                            | %
|2005        |  | 94.9                                                                            | %

Our Intelligence Community and Department of Defense customers include the Office of the Secretary
of Defense, the Department of State, the Department of Homeland Security, various intelligence agencies, federal intelligence and terrorism task forces, the U.S. Army, Navy, Air Force and Marine Corps and joint military commands. We also provide
solutions to federal government civilian agencies, including the National Aeronautics and Space Administration (NASA), and the Patent & Trademark Office (PTO), as well as to state and local governments and commercial customers.



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Industry Background

The federal government is the largest consumer of information technology services and solutions in the United States. We believe that the federal governments spending on information technology will continue to
increase in the next several years, driven by the expansion of national defense and homeland security programs, the continued need for sophisticated intelligence gathering and information sharing, increased reliance on technology service providers
due to shrinking ranks of government technical professionals, and the continuing impact of federal procurement reform and Office of Management and Budget mandates regarding information technology spending. Federal government spending on information
technology has consistently increased in each year since 1980. INPUT, an independent federal government market research firm, expects this trend to continue, with federal government spending on information technology forecast to increase from $79
billion in federal fiscal year 2007 to $102 billion in federal fiscal year 2012, a 5% compound annual growth rate over the next five years. Moreover, this data may not fully reflect government spending on classified intelligence programs,
operational support services to our armed forces and complementary technical services, which include sophisticated systems engineering.

Across the National Security community, we see the following trends that will continue to drive increased spending and dependence on technology support contractors.

Increased Spending on Defense to Combat the Global War on Terror. The Department of Defense is the largest purchaser of information technology in
the federal government. For government fiscal year 2008, the President has signed a bill that authorizes $479 billion in defense spending. This same appropriations bill includes supplemental funding of $87 billion to the Department of Defense, with
the President preparing an additional request of over $100 billion to provide funding for the Global War on Terror and operations in Iraq and Afghanistan. More specifically, the Operations & Maintenance portion of the Department of Defense
appropriations bill of $164 billion represents a 12% increase from government fiscal year 2007, and is the primary area of the budget from which ManTechs revenue is generated. For government fiscal year 2009, the President has requested a
budget of $515 billion, over a 7% increase from government fiscal year 2008. This budget has an initial request for supplemental funding of $70 billion to support current ongoing operational efforts and the Global War on Terror. We expect an
additional request to come after more specific needs of our troops are better known which will bring the total fiscal year 2009 supplemental funding to levels similar to previous fiscal years.

Increased Spending on Intelligence Gathering and Information Sharing. The emphasis on policy issues that affect irregular warfare, homeland
defense, and combating the spread of weapons of mass destruction outlined in the Department of Defenses Quadrennial Defense Review (QDR) remain overarching guiding principles for current and out-year Department of Defense funding priorities.
We believe intelligence agencies will increase their demand for data and text mining solutions to enable them to extract, analyze, and present data gathered from the massive volumes of information available through open sources such as the Internet.
This increased focus on national security, homeland security, and intelligence has also reinforced the need for interoperability among the many disparate information technology systems throughout the federal government. We believe the Department of
Homeland Security and the intelligence agencies will continue to be interested in enterprise systems that enable better coordination and communication within and among agencies and departments.

Reliance on Technology Service Providers. The demand for technology service providers is expected to increase due to the need for federal agencies
to maintain core operational functions while maintaining and updating information technology across their enterprises. A 2007 industry forecast from INPUT estimates that Federal IT outsourcing will grow from over $13 billion in federal fiscal year
2006 to approximately $18 billion in federal fiscal year 2011, a 6% compound annual growth rate due to several factors including impending federal IT workforce shortage, the war in Iraq and federal contract spending slowdowns due to the uncertain
timing of appropriation passage. Given the difficulty the federal government has experienced in hiring and retaining skilled technology personnel in recent years, we believe the federal government will need to rely heavily on technology



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service providers that have experience with government legacy systems, can sustain mission-critical operations and have the required government security
clearances to deploy qualified personnel in classified environments.

Continuing Impact of Federal Procurement Reform. In recent
years, federal agencies have had increased access to alternative choices of contract acquisition vehiclessuch as indefinite delivery/indefinite quantity (ID/IQ) contracts, Government Wide Acquisition Contracts (GWACs), the General Services
Administration (GSA) schedule and agency specific Blanket Purchase Agreements (BPAs). These choices have created a market-based environment in government procurement. The environment has increased contracting flexibility and provides government
entities access to multiple channels to contractor services. Contractors successful past performance, as well as technical capabilities and management skills, remain critical elements of the award process. We believe the increased flexibility
associated with the multiple channel access, such as ID/IQ contracts, GWACs, GSA schedule contracts and BPAs, will result in the continued utilization of these contracting vehicles in the future, and will facilitate access to service providers to
meet the increased demand for, and delivery of, required services and solutions.

Our Solutions and Services

We deliver comprehensive information technology, technical and other services and solutions for mission-critical, enterprise information technology and
communication systems, primarily in support of national security programs for the Intelligence Community and Department of Defense. Our solutions include the following services offerings, often delivered in combination over an extended period of
time in support of long-term programs:



| |  |  | systems engineering
| | - |  | -------------------



| |  |  | systems integration
| | - |  | -------------------



| |  |  | software development
| | - |  | --------------------



| |  |  | enterprise architecture (design, review, implementation)
| | - |  | --------------------------------------------------------



| |  |  | cyber security
| | - |  | --------------



| |  |  | information assurance (security architecture, computer forensics, intrusion detection, penetration testing, cyber threat analysis)
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------



| |  |  | intelligence operations and analysis support
| | - |  | --------------------------------------------



| |  |  | network and critical infrastructure protection
| | - |  | ----------------------------------------------



| |  |  | information operations and information warfare support
| | - |  | ------------------------------------------------------



| |  |  | information technology (system development lifecycle management and system modernization)
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | communications integration
| | - |  | --------------------------



| |  |  | logistics & supply chain management
| | - |  | -----------------------------------

Our offerings fall into one or more of four basic categories: Information Technology Solutions; Intelligence Analysis & Mission Operations; Systems Engineering & Integration Solutions; and Global Logistics &
Supply Chain Management.

Information Technology Solutions

We provide a broad range of information technology solutions to our customers, including the following.

Secure Information Sharing and Collaboration. The ability to collaborate and share information across non-traditional boundaries, in a trusted fashion, has become critically important post 9/11. We apply extensive



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engineering experience and proven solutions to facilitate collaboration and information sharing to meet Department of Defense and Intelligence Community
security requirements. We were selected as one of two companies to lead the development of a next generation Analytic Sharing and Collaboration program for the Office of the Director of National Intelligence (ODNI). Additionally we have engineered
and deployed for the Army, Navy, and FBI among others a highly secure (Director of Central Intelligence Director (DCID) 6/3 Protection Level (PL) 3 accredited) robust information system that provides trusted information sharing tools and
capabilities and a COTS-based solution that includes Microsoft Office, email, Voice Over Internet Protocol (VOIP), Video Teleconferencing (VTC), instant messaging, document management and an information portal.

Information Operations. We provide customers in the Department of Defense, Intelligence Community, and Commercial market a wide range of services
in the areas of IT Security Services, Incident Response, Computer Forensic Support, Digital Vulnerability Assessments, Specialized Network Architecture Support, and Intrusion Operations. We perform advance services in the areas of data mining
analysis, atypical data recovery techniques, and data extraction. We conduct advanced computer network operations analysis including the reverse engineering of network protocols, applications, and operating systems. We also provide custom internet
enumeration and analysis services and full lifecycle support for internet access architectures.

For example, in support of a customer, we
developed and staff a national level computer forensic laboratory and provide a broad spectrum of subject matter expertise, including the following:



| |  |  | advanced computer forensic analysis
| | - |  | -----------------------------------



| |  |  | reverse engineering and code analysis
| | - |  | -------------------------------------



| |  |  | forensic signature creation, detection, and analysis
| | - |  | ----------------------------------------------------



| |  |  | damaged media recovery
| | - |  | ----------------------



| |  |  | hidden data processing
| | - |  | ----------------------



| |  |  | protected data processing
| | - |  | -------------------------



| |  |  | forensic software development
| | - |  | -----------------------------



| |  |  | custom training development and implementation
| | - |  | ----------------------------------------------

We played a crucial role in the successful establishment of the mission and helped our government mission partner create a strong foundation for providing advanced forensics support.

Mission Enabling Solutions. We design, develop, implement, test, maintain and web-enabled mission software applications for our customers
information systems and network infrastructures. We provide comprehensive e-commerce services, including web development efforts that focus on designing and maintaining scalable, interoperable, reliable and portable end-to-end information management
solutions. We apply these capabilities to critical customer missions requiring multi-layered security within applications in order to improve information sharing and collaboration.

For example, we developed a state-of-the-art analytic environment that provides access to regional, national and international information with
appropriate security level access controls, providing direct operational support to time-sensitive counterterrorism activities in support of an Intelligence Community customer.

Enterprise Systems Engineering. We provide network architecture planning and implementation services and systems engineering services in support
of enterprise-wide network infrastructures and components that include LAN/WAN architectures, messaging architectures, network management solutions, directory services architecture, and web hosting. These services are provided within secure
environments requiring the application of multi-level security policies across the enterprise. For example, we developed and implemented a scalable enterprise-wide network and messaging infrastructure accredited to meet DCID 6/3 PL3 in support of an



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Intelligence Community customer. Additionally, we provide enterprise systems engineering services to include LAN /WAN, messaging, and e-mail infrastructure
architecture and implementation to an Intelligence Community customer.

Intelligence Analysis & Mission Operations

We provide a broad range of solutions to enhance systems and network availability and mission-critical performance of our customers hardware,
software, computer network and telecommunication assets and operations, including the following.

Intelligence Operations and Analysis
Support. We provide services for strategic and tactical intelligence systems, networks and facilities in support of the Intelligence Community and Department of Defense. To support classified systems and facilities designed to collect, analyze,
process and report on various intelligence sources, we develop and integrate collection and analysis systems and techniques. Our intelligence-related services also include the design, rapid development and prototyping, integration and management of
real-time signal processing systems. We also provide support to the development and application of analytical techniques to counterintelligence, Human-Intelligence (HUMINT) operations/training, and counter-terrorist operations. Our offerings also
include the provision of subject matter expert analysts who work directly with the Intelligence Community and Department of Defense customers to produce long-term classified and unclassified research/analytic reporting, as well as provide real-time
analytic support for ongoing intelligence operations.

Secrecy Management and Program Security Architecture.We provide secrecy
management and security infrastructure services for highly-classified programs, including intelligence operations and military programs. Due to the highly sensitive and classified nature of these programs, opportunities are often limited to a select
number of providers that possess the requisite capabilities, qualifications and special access clearances. We provide secrecy and security services including vulnerability assessment, exposure analysis, secrecy architecture design, security policy
development and implementation, lifecycle acquisition program security, Operations Security (OPSEC), information assurance, Anti-Tamper, Export Compliance support, foreign disclosure, system security engineering, security awareness and training,
comprehensive security support services, and technical certification and accreditation services.

For example, we provide integrated
security support for the Joint Strike Fighter (JSF) Program. With numerous highly classified technologies incorporated in its design and international content in both its development and its usage, the JSF Program presents the most complex security
problem set of any weapon system in our nations history. We provide a complete range of integrated security services to the JSF Program Office, including physical, personnel, and cyber security disciplines, as well as in-depth support to
international disclosure controls. Our established performance in security architecture development and critical information protection, and our security and risk management methodologies, establish a framework for lifecycle JSF program protection
that encompasses all security disciplines.

Cyber Security. We provide comprehensive cyber warfare and cyber defense solutions and
services to the Department of Defense, agencies in the Intelligence Community, Department of State and the Department of Justice. We accomplish this through our expertise in policy, planning and development; detection, analysis, prevention and
deterrence; penetration and exploitation; security architecture design, development and implementation; certification and accreditation; and information assurance training and awareness support. Our services include specific competencies such as
cyber security incident response, threat and malcode analysis and cyber threat analysis and vulnerability analysis.



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Systems Engineering & Integration Solutions

We offer our customers a broad range of systems engineering and systems integration solutions, including the following.

Systems Engineering Services. We perform comprehensive Systems Engineering services to analyze, develop, and integrate solutions for U.S. Navy
hardware and software requirements. Systems Engineering is an interdisciplinary approach and means for enabling the realization and deployment of successful systems. We provide Systems Engineering services with scientists and engineers that consider
both technical and business requirements to deliver quality products that have been meeting the warfighters needs since 1968. We support the entire systems lifecycle from requirements definition and analysis, through design and development and
on to test and evaluation, and operational deployment. As part of systems engineering support we address a full 360 degree perspective of a program, including disciplines of system, software, hardware, acoustics, communications, reliability, safety
and test engineering as well as modeling, simulation and analysis. These services are provided across an entire spectrum of Navy and Marine Corp systems and platforms that encompass subsurface, surface, ground, air, space, and cyber requirements.

Modeling & Simulation, Testing and Evaluation. We provide system analysis, modeling and testing of technologies and
systems, which are being deployed to identify and detect nuclear and radiological sources that are attempting entry into the U.S. for the Department of Homeland Securitys Domestic Nuclear Detection Office. Our services include technology
assessments, sensor modeling, situational awareness and test preparation and planning.

We test complex and mission-critical hardware and
software systems used by the Army, Navy and NASA, with many of these customer relationships spanning more than three decades. We have played key roles in improving the performance, reliability, maintainability, supportability and weapons
effectiveness of all Navy in-service rotary and fixed wing platforms, including the F/A-18E/F Super Hornet, and their associated ordnance. We are participating in the development of plans for testing and evaluating the Joint Strike Fighter and the
Multi-Mission Maritime Aircraft.

Independent Validation and Verification. We perform tests to certify that new systems or upgraded
systems operate in accordance with their design requirements. For example, we have performed certification services for aircraft weapon systems in support of U.S. Naval Air Systems Command programs. We are a Prime contractor on the Department of
Homeland Securitys Enterprise Acquisition Gateway for Leading Edge Solutions (EAGLE) in the functional category for Independent Test, Evaluation, Validation and Verification. We were awarded the first task order issued under this category to
provide the DHS Science & Technology Directorate with IT security compliance services, IT security architecture services, and IT security independent verification and validation (IV&V) of the Directorates applications and
systems at headquarters and throughout its numerous research laboratories.

Global Logistics & Supply Chain Management

We offer our customers a global logistics and supply chain management solution set which includes the following offerings:

Communication Systems and Infrastructure Support. We design, procure, install, operate, sustain, test, repair and maintain secure communication
systems and network infrastructures. This requires specialized knowledge of industry standards, state-of-the-art system architectures and applications in order to recommend and design technology solutions for integration into our customers
secure communication systems to include voice, data and video communication systems.

For example, we manage and operate premier
infrastructure and facility operations in regional support centers throughout the United States, Iraq, Afghanistan, Germany, Korea and elsewhere for intelligence, electronic warfare and related critical missions. We perform systems and network
troubleshooting, maintenance, repair and installation, as well as integration and testing of electronic, electrical and mechanical equipment designed for vehicular, airborne and portable platforms. Personnel located at these regional support centers
have



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supported every major military deployment since 1990. Beginning with Desert Storm and currently for Operation Iraqi Freedom and Operation Enduring Freedom
(OIF/OEF), our personnel have provided Command, Control, Communications, Computers and Intelligence (C4I) systems operations and maintenance support to deployed units in hostile environments.

Global and Domestic Mission-Critical Logistics Support. We are responsible for providing logistics, repair and maintenance services, unique system
training and curriculum support, resource management, and inventory tracking technologies for complex, critical and specialized customer systems in deployed, isolated and remote locations worldwide. Specifically, related to the Route Clearance
program on behalf of the U.S. Army in Southwest Asia (predominantly Iraq and Afghanistan), we are responsible for maintaining critical and life-sustaining operational readiness levels for counter-improvised explosive device (IED) vehicles and
systems. To that end, we are responsible for the development and management of supply levels as well as the streamlined operation of supply-chain channels to include vendor partnerships with original equipment manufacturers (OEMs) to ensure
the expedient, unencumbered delivery of systems and parts to forward operating theatre locations.

Global Property Management. We
provide property program management and readiness tracking, automated records maintenance, property accountability, and property book visibility, evaluation, validation and analysis for the U.S. Armys Global Property Management Services and
Property Accountability and Readiness Programs in multiple locations throughout the western United States. This program combines our expertise in logistics, supply support operations and services, operations and maintenance and systems integration.

Global Information Technology Modernization. We provide secure Information Technology (IT) Systems Lifecycle Management to
over 100,000 government customers worldwide. We currently have the responsibility to modernize over 850 classified and unclassified networks and systems in over 300 locations around the world. The backbone of our global capabilities is a
comprehensive ISO 9001:2000-certified management and control system designed to provide best value for the customers and to lower the total cost of ownership across the systems lifecycles. All operations are executed within our Top
Secret-cleared systems storage and integration facilities. These secure facilities are connected to our customers classified communications and networks and are designed to operate within a variety of operational and physical security
parameters. Our seamless interface with extensive secure multi-modal distribution services is responsible for the successful, secure shipment of over 3.5 million pounds of equipment using the entire spectrum of Defense, State and commercial
distribution services.

Our Growth Strategy

Our objective is to grow our business profitably as a premier provider of comprehensive information technology and technical services solutions to the federal government market. Our strategies for achieving this objective include the
following.

Expand Our Customer Base. We intend to capitalize on our long-term relationships with our customers and our reputation
within the Intelligence Community, Department of Defense and other government agencies to attract new customers and to cross-sell our broad array of solutions to our existing customers. Under the best value contracting process that has
resulted from reforms in the government procurement process, past performance and technical approach are key factors that the government may consider when evaluating competitive bids. Based on our long-term support to numerous customers, we believe
we have a successful past performance track record and have demonstrated technical expertise that gives us credibility with these customers and enhances our ability to be successful in bidding on follow-on contracts and in competing for new programs
of both existing and new customers. As customers seek a single integrator solution approach, we believe that we have sufficient experience and expertise to support such programs for current and new customers. Because our personnel are
on-site with our customers or work in close proximity to our customers, we develop close relationships with them and are often able to enhance our customers operations by rapidly identifying and developing solutions for customer-specific
requirements.



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Target High Growth Segments of the Market. We believe the projected growth in government
information technology and technical services spending will offer opportunities for development and delivery of advanced technology solutions for enterprise applications and information systems. We intend to expand our service offerings in high
growth program areas. In particular, we intend to focus on providing new or improved solutions in information assurance, including cyber security and homeland defense programs, and other secure systems and infrastructure solutions in support of
National Security programs that support the Global War on Terror and ongoing operations in active theaters of military and intelligence operations, such as Iraq and Afghanistan. We also plan to continue to target customers seeking to improve their
information technology infrastructures and systems, especially those charged with building and operating enhanced web-based collaboration/sharing platforms. We have also identified information assurance and homeland defense programs as targeted
growth areas.

Attract, Train and Retain Highly Skilled and Highly Cleared Personnel. We continue to attract, train and retain
skilled professionals, including engineers, scientists, analysts, technicians and support specialists, to ensure that we have the capabilities to fulfill our customers requirements. We target candidates who have served in the military or as
civilian experts in the Intelligence Community and Department of Defense, as well as those who are leading specialists in their technology disciplines. In 2007, we were ranked ninth in the nation and first in Virginia on the G.I. Jobs Magazine
Military-Friendly Employers list. We believe we can continue to retain our employees by offering competitive compensation and incentive plans, opportunities for career growth through company-supported education programs and diverse, challenging
assignments at approximately 300 locations domestically and abroad. As of December 31, 2007, over 65% of our workforce possess clearances and approximately 41% possess Top Secret or above level clearances.

Pursue Strategic Acquisitions. We plan to enhance our internal growth by selectively pursuing strategic acquisitions of businesses that can
cost-effectively broaden our domain expertise and service offerings and allow us to establish relationships with new customers. We have successfully acquired nine companies since our IPO in February 2002, accelerating our overall revenue growth. We
are focused primarily on acquiring businesses that provide value-added solutions for the Intelligence Community and Department of Defense, but we will also consider opportunities to acquire other businesses where we can leverage our reputation, core
competencies and experienced management team. During 2007, we acquired two businesses, McDonald Bradley, Inc. and SRS Technologies, Inc.

2007
Acquisitions

McDonald BradleyOn December 18, 2007, we completed the acquisition of all outstanding shares
of McDonald Bradley, Inc. (MBI). MBI was a privately-held company with specialized knowledge in the areas of information sharing and collaboration, information assurance, data interoperability and Service Oriented Architectures
(SOA). Their largest customer is the Defense Intelligence Agency (DIA) and over 60 percent of MBIs revenue has historically been derived from the Department of Defense, Intelligence Community, Department of Homeland Security and
federal law enforcement agencies. MBI had 264 employees, including highly-cleared personnel, at December 31, 2007.

Management
believes the acquisition of MBI expands our capabilities in information sharing and data interoperability, adds more depth to our SOA skill set and increases our presence in the Defense Intelligence Agency and other high-end national security
agencies. Additionally, MBI has a prime contract on the Department of Homeland Securitys EAGLE contract, which provides us with increased access to support the Department of Homeland Securitys information technology programs.

SRS TechnologiesOn May 7, 2007, we completed the acquisition of all outstanding equity interests in SRS Technologies
(SRS). SRS was a privately-held company with specialized domain knowledge in the areas of space-based radar and communications; chemical, biological, conventional and nuclear weapons detection and defeat programs; imagery intelligence;
and aeronautic, space and information systems development. More than



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85 percent of SRSs revenue has historically been derived from the U.S. government including Department of Defense, Intelligence Community and the
Department of Homeland Security. SRS had over 800 employees, including highly-cleared and educated personnel, at May 7, 2007.

Management believes the acquisition of SRS has extended our presence in the high-end national security marketplace and enhances our presence in the U.S. Defense Advance Research Projects Agency (DARPA), Department of Homeland Security,
Missile Defense Agency, National Reconnaissance Office, National Geospatial-Intelligence Agency, and other Department of Defense agencies.

2006
Acquisition

GRS SolutionsOn October 5, 2006, we completed the acquisition of all outstanding shares of GRS
Solutions, Inc. (GRS). GRS was a privately held company headquartered in Falls Church, VA providing specialized technical, operational and analytical services to the Intelligence Community.

2005 Acquisition

Gray Hawk
SystemsOn May 31, 2005, we completed the acquisition of 100 percent of the outstanding shares of Gray Hawk Systems, Inc. (Gray Hawk). Gray Hawk provides a broad range of intelligence-related services to the homeland security, law
enforcement, Intelligence Community and the Department of Defense markets.

Our Customers

Our customers include U.S. federal government intelligence, military and civilian agencies, state and local governments and commercial customers. We have
successful, long-standing relationships with our customers, having supported many of them for 20 to 40 years. Some of our representative customers include:



| |  |  | Intelligence and Department of Defense customers, such as the Office of the Secretary of Defense, the U.S. Army, Navy, Air Force and Marine Corps, the Department of
State, the Department of Homeland Security, federal Intelligence and Terrorism Task Forces and multiple intelligence and classified agencies.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Civilian agencies or departments, such as NASA and PTO.
| | - |  | -------------------------------------------------------



| |  |  | We derive the vast majority of our revenues from our federal government customers, consisting primarily of customers in the Intelligence Community and Department of
Defense.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|            |  |                                                         |  
|----------- |  | ------------------------------------------------------- | -
|Fiscal Year |  | Percentage of Revenues fromFederal Government Customers |  
|2007        |  | 97.7                                                    | %
|2006        |  | 97.8                                                    | %
|2005        |  | 98.0                                                    | %

Our federal government customers typically exercise independent contracting authority, and even
offices or divisions within an agency or department may directly, or through a prime contractor, use our services as a separate customer so long as that customer has independent decision-making and contracting authority within its organization. For
example, under a contract with one of the Armys contracting agencies, program managers throughout the Army and from other services and defense agencies are able to purchase a wide range of our solutions. Another contract, the U.S. Army
Countermine program accounted for 14.4%, 9.0%, and 0.0% of our revenues for the year ended December 31, 2007, 2006 and 2005, respectively. In addition, there were no sales to any customers within a single country (except for the United States)
where such sales accounted for 10% or more of our total revenue.

For 2007 and 2006, we derived 46.4% and 32.3%, respectively, of our
revenues through relationships with prime contractors, who contract directly with the customer and subcontract to us.



10



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Foreign Operations

We treat sales to U.S. government customers as sales within the United States, regardless of where services are performed. NATO is the Companys largest international customer. The percentages of total revenues
by geographic customer for the last three years were as follows:



|              |  |                         |   |  |       |   |  |       |  
|------------- |  | ----------------------- | - |  | ----- | - |  | ----- | -
|              |  | Year ended December 31, |  
|              |  | 2007                    |   |  | 2006  |   |  | 2005  |  
|United States |  | 98.7                    | % |  | 98.9  | % |  | 99.3  | %
|International |  | 1.3                     | % |  | 1.1   | % |  | 0.7   | %
|              |  |                         |   |  |       |   |  |       |  
|              |  | 100.0                   | % |  | 100.0 | % |  | 100.0 | %
|              |  |                         |   |  |       |   |  |       |  

Other information relating to our foreign operations is provided in Note 13 to our consolidated
financial statements.

Backlog

At
December 31, 2007, our backlog was $3.2 billion, of which $758 million was funded backlog. At December 31, 2006, our backlog was $2.9 billion, of which $622 million was funded backlog. Backlog represents estimates that we calculate on the
basis described below. We expect that approximately 35% to 45% of our total backlog will be recognized as revenues prior to December 31, 2008.

We define backlog as our estimate of the remaining future revenues from existing signed contracts, assuming the exercise of all options relating to such contracts and including executed task orders issued under ID/IQ or GWAC contracts. This
includes an estimate of revenues for solutions that we believe we will be asked to provide in the future under the terms of executed multiple-award contracts for which we are not the sole provider, meaning that the customer could turn to other
companies to fulfill the contract. It also includes an estimate of revenues from indefinite delivery, indefinite quantity contracts, which specify a maximum, but only a token minimum, amount of goods or services that may be provided under the
contract.

We define funded backlog to be the portion of backlog for which funding currently is appropriated and allocated to the contract
by the purchasing agency or otherwise authorized for payment by the customer upon completion of a specified portion of work. Our funded backlog does not include the full value of our contracts, because Congress often appropriates funds for a
particular program or contract on a yearly or quarterly basis, even though the contract may call for performance that is expected to take a number of years.

Changes in the amount of our backlog and funded backlog result from potential future revenues from the execution of new contracts or the extension of existing contracts, reductions from contracts that end or are not
renewed, reductions from the early termination of contracts, and adjustments to estimates for previously included contracts. Changes in the amount of our funded backlog also are affected by the funding cycles of the government. Our estimates of
future revenues are inexact and the receipt and timing of any of these revenues is subject to various contingencies, many of which are beyond our control. The actual accrual of revenues on programs included in backlog and funded backlog may never
occur or may change because a program schedule could change, a program could be canceled, a contract could be modified or canceled, an option that we have assumed would be exercised is not exercised, or initial estimates regarding the level of
solutions that we may provide could prove to be wrong. For the same reason, we believe that period-to-period comparisons of backlog and funded backlog are not necessarily indicative of future revenues that we may receive.

Employees

As of December 31, 2007, we had
approximately 7,300 employees, including over 700 employees located outside of the United States.



11



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Of our employees, 211 are represented by the International Brotherhood of Electrical Workers union under
a collective bargaining agreement, all of whom are located at NASAs Goddard Space Flight Center. We have not experienced any work stoppage or strike by these employees and believe our relations with the union and our employees to be good.

Patents, Trademarks, Trade Secrets and Licenses

We own two patents in the United States and two patents in Canada. While we believe these patents are valid, we do not consider our business to be dependent on the protection of these patents in any material way.

We maintain a number of trade secrets that contribute to our success and competitive distinction and endeavor to accord such trade secrets
protection adequate to ensure their continuing availability to us. While retaining protection of our trade secrets and vital confidential information is important, we are not materially dependent on maintenance of any specific trade secret or group
of trade secrets.

We also enter into confidentiality and intellectual property agreements with our employees, which contain provisions
that require them to disclose any inventions created during employment, convey all rights to inventions to us, and restrict the distribution of proprietary or confidential information.

Cyclicality

Expenditures by our customers tend to vary in cycles that reflect overall economic
conditions and customer mission requirements, as well as budgeting and buying patterns. Our revenue has in the past been, and may in the future be, materially affected by a decline in the defense or other intelligence budgets or in the economy in
general. Such future declines could alter our current or prospective customers spending priorities and budget cycles, or extend our sales cycle.

Competition

Our key competitors currently include divisions of large defense contractors such as Computer Sciences
Corporation, General Dynamics, Lockheed Martin Corporation, Northrop Grumman Corporation, and Science Applications International Corporation, as well as a number of mid-size U.S. government contractors with specialized capabilities, such as CACI,
Booz Allen & Hamilton, Stanley, Inc. and SRA International. Because of the diverse requirements of U.S. government customers and the highly competitive nature of large procurements, corporations frequently form teams to pursue contract
opportunities. The same companies listed as competitors will, at times, team with us or subcontract to us in the pursuit of new business. We believe that the major competitive factors in our market are distinctive technical competencies, successful
past contract performance, intelligence and military work experience, price of services, reputation for quality and key management with domain expertise.

Company Information Available on the Internet

Our internet address is www.mantech.com. Through a link to the Investor
Relations section of our website, we make available, free of charge, our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to those reports filed or furnished pursuant to Section 13(a)
or 15(d) of the Exchange Act, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC.

You may request a copy of the materials identified in the preceding paragraph, at no cost, by writing or telephoning us at the following address or telephone number:

ManTech International Corporation

Attention:
Investor Relations

12015 Lee Jackson Highway

Fairfax, Virginia 22033-3300

Phone: (703) 218-6000



12



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Item 1A.Risk Factors

Forward-Looking and Cautionary Statements

We discuss expectations regarding our future
performance, such as our business outlook, in our annual and quarterly reports, press releases, and other written and oral statements. These forward-looking statements are based on currently available financial, economic and competitive
data and our operating plans. They are inherently uncertain. Investors must recognize that events could turn out to be significantly different from our current expectations. We undertake no obligation to update any forward-looking statement. The
following discussion of risks is not all inclusive, but is designed to highlight what we believe are important factors for you to consider when evaluating our trends and future results.

Risks Related to Our Business

We depend on
contracts with the U.S. federal government for substantially all of our revenues. If our relationships with the federal government were harmed, our business, future revenues and growth prospects could be adversely affected.

We expect that federal government contracts will continue to be the primary source of our revenues for the foreseeable future. We derived approximately
98% of our revenues from our federal government customers (consisting primarily of customers in the Intelligence Community, the Departments of Defense, State, Homeland Security and Justice, and other U.S. federal government agencies) in each of the
last three years. Our business, prospects, financial condition or operating results could be materially harmed if



| |  |  | We are suspended or debarred from contracting with the federal government or a significant government agency,
| | - |  | -------------------------------------------------------------------------------------------------------------



| |  |  | Our reputation or relationship with government agencies is impaired, or
| | - |  | -----------------------------------------------------------------------



| |  |  | The government ceases to do business with us, or significantly decreases the amount of business it does with us.
| | - |  | ----------------------------------------------------------------------------------------------------------------

Among the key factors in maintaining our relationships with federal government agencies are our performance on individual contracts and task orders, the
strength of our professional reputation and the relationships of our senior management with our customers.

Federal government
spending and mission priorities may change in a manner that adversely affects our future revenues and limits our growth prospects.

Our business depends upon continued federal government expenditures on intelligence, defense and other programs that we support. These expenditures have not remained constant over time. For example, the overall U.S. defense budget declined
for periods of time in the late 1980s and the early 1990s, resulting in a slowing of new program starts, program delays and program cancellations. These reductions caused many defense-related government contractors to experience declining revenues,
increased pressure on operating margins and, in some cases, net losses. While spending authorizations for intelligence and defense-related programs by the government have increased in recent years, and in particular after the 2001 terrorist attacks
and more recently in support of U.S. war efforts in Southwest Asia, future levels of expenditures, mission priorities and authorizations for these programs may decrease, remain constant or shift to programs in areas where we do not currently provide
services. Our business, prospects, financial condition or operating results could be materially harmed by the following



| |  |  | Budgetary constraints affecting federal government spending generally, or specific departments or agencies in particular, and changes in fiscal policies or
available funding,
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Changes in federal government programs or requirements,
| | - |  | -------------------------------------------------------



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| |  |  | Federal government shutdowns (such as that which occurred during the federal governments 1996 fiscal year) and other potential delays in the government
appropriations process,
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Realignment of funds with changed federal government priorities, which may impact the U.S. war efforts, including reductions in funds for in-theater missions,
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Curtailment of the federal governments outsourcing of mission critical support and IT services,
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | Competition and consolidation in the information technology industry,
| | - |  | ---------------------------------------------------------------------



| |  |  | The adoption of new laws or regulations,
| | - |  | ----------------------------------------



| |  |  | Delays in the payment of our invoices by federal government offices due to problems with, or upgrades to, federal government information systems, or for other
reasons, and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | General economic conditions.
| | - |  | ----------------------------

These
or other factors could cause federal government agencies and departments to reduce their purchases under contracts, exercise their right to terminate contracts, or not exercise options to renew contracts, any of which could cause us to lose revenue.
A significant decline in overall U.S. government spending, or a shift in expenditures away from agencies or programs that we support, could cause a material decline to our revenue.

The failure by Congress to approve budgets on a timely basis for the federal agencies we support could delay procurement of our services and
solutions and cause us to lose future revenues.

On an annual basis, Congress must approve budgets that govern spending by the
federal agencies that we support. In years when Congress is not able to complete its budget process before the end of the federal governments fiscal year on September 30, Congress typically funds government operations pursuant to a
continuing resolution. A continuing resolution allows federal government agencies to operate at spending levels approved in the previous budget cycle. When the U.S. government operates under a continuing resolution, it may delay funding
we expect to receive from clients on work we are already performing and will likely result in new initiatives being delayed or in some cases cancelled.

Federal government contracts contain provisions giving government customers a variety of rights that are unfavorable to us, including the ability to terminate a contract at any time for convenience.

Federal government contracts contain provisions, and are subject to laws and regulations, that give the government rights and remedies not
typically found in commercial contracts. These provisions may allow the government to



| |  |  | Terminate existing contracts for convenience, as well as for default,
| | - |  | ---------------------------------------------------------------------



| |  |  | Reduce orders under, or otherwise modify contracts or subcontracts,
| | - |  | -------------------------------------------------------------------



| |  |  | Cancel multi-year contracts and related orders if funds for contract performance for any subsequent year become unavailable,
| | - |  | ----------------------------------------------------------------------------------------------------------------------------



| |  |  | Decline to exercise an option to renew a multi-year contract,
| | - |  | -------------------------------------------------------------



| |  |  | Claim rights in products and systems produced by us,
| | - |  | ----------------------------------------------------



| |  |  | Prohibit future procurement awards with a particular agency as a result of a finding of an organizational conflict of interest based upon prior related work
performed for the agency that would give a contractor an unfair advantage over competing contractors,
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Subject the award of contracts to protest by competitors, which may require the contracting federal agency or department to suspend our performance pending the
outcome of the protest,
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



14



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| |  |  | Suspend or debar us from doing business with the federal government or with a governmental agency, and
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | Control or prohibit the export of our products and services.
| | - |  | ------------------------------------------------------------

If the government terminates a contract for convenience, we may recover only our incurred or committed costs, settlement expenses and profit on work completed prior to the termination. If the government terminates a
contract for default, we may not recover even those amounts, and instead may be liable for excess costs incurred by the government in procuring undelivered items and services from another source. If one of our government customers were to
unexpectedly terminate or cancel, or decline to exercise an option to renew, one or more of our significant contracts or programs, our revenues and operating results would be materially harmed.

We derive significant revenues from contracts awarded through a competitive bidding process. This process can impose substantial costs upon us and
we may lose revenue if we fail to compete effectively.

We derive significant revenue from federal government contracts that are
awarded through a competitive bidding process. We expect that a significant portion of our future business will also be awarded through competitive bidding. Competitive bidding presents a number of risks, including



| |  |  | Bidding on programs in advance of the completion of their design, which may result in unforeseen technological difficulties and cost overruns,
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Spending substantial cost and managerial time and effort to prepare bids and proposals for contracts that may not be awarded to us, which may result in reduced
profitability,
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Failing to accurately estimate the resources and cost structure that will be required to service any contract we are awarded,
| | - |  | -----------------------------------------------------------------------------------------------------------------------------



| |  |  | Incurring expense and delay due to a competitors protest or challenge of contract awards made to us, including the risk that any such protest or challenge
could result in the resubmission of bids on modified specifications, or in the termination, reduction or modification of the awarded contract, which may result in reduced profitability,
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Changes to client bidding practices or government reform of its procurement practices, which may alter the prescribed contract relating to contract vehicles,
contract types, consolidations, and
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Changes in policy and goals by the government providing set aside funds to small businesses, disadvantaged businesses, and other socio-economic requirements in the
allocation of contracts.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

If we are unable to win particular contracts that are awarded through the competitive bidding
process, in addition to the risk that our operating results may be adversely affected, we may be unable to operate in the market for services that are provided under those contracts for a number of years. Even if we win a particular contract through
competitive bidding, our profit margins may be depressed as a result of the costs incurred through the bidding process.

Unfavorable
federal government audit results could subject us to penalties or sanctions, adversely affect our profitability, harm our reputation and relationships with our customers or impair our ability to win new contracts.

The Defense Contract Audit Agency (DCAA) and other government agencies routinely audit and investigate government contracts and systems. These agencies
review a contractors performance on its contract, cost structure and compliance with applicable laws, regulations and standards. The DCAA also reviews the adequacy of, and a contractors compliance with, its internal control systems and
policies, including the contractors accounting, purchasing, estimating, compensation and management information systems. Allegations of impropriety or deficient controls could harm our reputation or influence the award of new contracts. Any
costs



15



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found to be improperly allocated to a specific contract will not be reimbursed, while such costs already reimbursed must be refunded. Therefore, a DCAA audit
could materially affect our competitive position and result in a substantial adjustment to our revenues. DCAA audits for costs incurred on work performed after 2004 have not yet been completed. In addition, government agency audits on a special
segment of the company have not been completed for the years 2002 through 2004 and one of our foreign operations has not yet been audited for 2003 and 2004. While we believe that such costs will be approved upon final audit, we do not know the
outcome of any future audits and adjustments and, if any future audit adjustments exceed out estimates, our profitability could be adversely affected. Additionally, if a government audit uncovers improper or illegal activities, we may be subject to
civil and criminal penalties and administrative sanctions, including termination of contracts, forfeiture of profits, suspension of payments, fines and suspension or debarment from doing business with federal government agencies.

If we fail to comply with complex procurement laws and regulations, we could lose business and be liable for various penalties or sanctions.

We must comply with laws and regulations relating to the formation, administration and performance of federal government contracts.
These laws and regulations affect how we conduct business with our federal government contracts. In complying with these laws and regulations, we may incur additional costs, and non-compliance may also allow for the assignment of additional fines
and penalties, including contractual damages. Among the more significant laws and regulations affecting our business are the following:



| |  |  | The Federal Acquisition Regulation, which comprehensively regulates the formation, administration and performance of federal government contracts
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The Truth in Negotiations Act, which requires certification and disclosure of all cost and pricing data in connection with contract negotiations
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The Cost Accounting Standards and Cost Principles, which impose accounting requirements that govern our right to reimbursement under certain cost-based federal
government contracts
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Laws, regulations and executive orders restricting the use and dissemination of information classified for national security purposes and the export of certain
products, services and technical data. We engage in international work falling under the jurisdiction of U.S. export control laws. Failure to comply with these control regimes can lead to severe penalties, both civil and criminal, and can include
debarment from contracting with the U.S. government.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our contracting agency customers periodically review our
performance under and compliance with the terms of our federal government contracts. If a government review or investigation uncovers improper or illegal activities, we may be subject to civil or criminal penalties or administrative sanctions,
including



| |  |  | Termination of contracts
| | - |  | ------------------------



| |  |  | Forfeiture of profits
| | - |  | ---------------------



| |  |  | Cost associated with triggering of price reduction clauses
| | - |  | ----------------------------------------------------------



| |  |  | Suspension of payments
| | - |  | ----------------------



| |  |  | Fines, and
| | - |  | ----------



| |  |  | Suspension or debarment from doing business with federal government agencies.
| | - |  | -----------------------------------------------------------------------------

Additionally, the civil False Claims Act provides for potentially substantial civil penalties where, for example, a contractor presents a false or
fraudulent claim to the government for payment or approval. Actions under the civil False Claims Act may be brought by the government or by other persons on behalf of the government (who may then share a portion of any recovery).



16



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If we fail to comply with these laws and regulations, we may also suffer harm to our reputation, which
could impair our ability to win awards of contracts in the future or receive renewals of existing contracts. If we are subject to civil and criminal penalties and administrative sanctions or suffer harm to our reputation, our current business,
future prospects, financial condition, or operating results could be materially harmed.

The government may also revise its procurement
practices or adopt new contracting rules and regulations, including cost accounting standards, at any time. Any new contracting methods could be costly to satisfy, be administratively difficult for us to implement and could impair our ability to
obtain new contracts.

We may lose money on some contracts if we do not accurately estimate the expenses, time and resources
necessary to satisfy our contractual obligations.

We enter into three types of federal government contracts for our services:
cost-plus, time-and-materials and fixed-price. For our last two fiscal years, we derived revenue from such contracts as follows:



|                   |  |      |   |  |      |  
|------------------ |  | ---- | - |  | ---- | -
|Contract Type      |  | 2007 |   |  | 2006 |  
|Cost-Plus          |  | 23.4 | % |  | 24.7 | %
|Time-and-Materials |  | 62.9 | % |  | 64.5 | %
|Fixed-Price        |  | 13.7 | % |  | 10.8 | %

Each of these types of contracts, to varying degrees, involves some risk that we could
underestimate our cost of fulfilling the contract, which may reduce the profit we earn or lead to a financial loss on the contract.



| |  |  | Under cost-plus contracts, we are reimbursed for allowable costs and paid a fee, which may be fixed or performance-based. To the extent that the actual costs
incurred in performing a cost-plus contract are within the contract ceiling and allowable under the terms of the contract and applicable regulations, we are entitled to reimbursement of our costs, plus a profit. However, if our costs exceed the
ceiling or are not allowable under the terms of the contract or applicable regulations, we may not be able to recover those costs.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Under time-and-materials contracts, we are reimbursed for labor at negotiated hourly billing rates and for certain expenses. We assume financial risk on
time-and-material contracts because we assume the risk of performing those contracts at negotiated hourly rates.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Under fixed-price contracts, we perform specific tasks for a fixed price. Compared to cost-plus contracts, fixed-price contracts generally offer higher margin
opportunities, but involve greater financial risk because we bear the impact of cost overruns and bear the risk of underestimating the level of effort required to perform the contractual obligations, which could result in increased costs and
expenses.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our profits could be adversely affected if our costs under any of these contracts exceed the assumptions we
used in bidding for the contract. Over time, and particularly if we acquire other businesses, our contract mix may change, thereby potentially increasing our exposure to these risks.

We may not receive the full amount authorized under our contracts and we may not accurately estimate our backlog, which could adversely affect our
future revenues and growth prospects.

As of December 31, 2007, our estimated contract backlog totaled approximately $3.2
billion, of which approximately $758 million was funded. Backlog is our estimate of the remaining future revenues from existing signed contracts, and assumed exercises of all options relating to such contracts. Backlog also includes estimates of
revenues for solutions that we believe we will be asked to provide in the future under the terms of executed multiple-award contracts, and estimates of revenues from ID/IQ contracts. Our estimates are based on our experience using such vehicles and
similar contracts; however, we cannot assure that all, or any, of such



17



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estimated contract revenue will be recognized as revenue. The U.S. governments ability to modify, curtail or terminate our major programs or contracts
makes the calculation of backlog subject to numerous uncertainties. There can be no assurance that our backlog projections will result in actual revenue in any particular period, or at all, or that any contract included in backlog will be
profitable. There is a higher degree of risk in this regard with respect to unfunded backlog, since it contains managements estimate of amounts expected to be realized on unfunded contract work that may never be realized as revenues. If we
fail to realize as revenues those amounts included in our backlog, our future revenue and growth prospects may be adversely affected.

Federal customers may be consolidating requirements to larger procurements for procurement efficiency.

Federal
agencies with whom we conduct business may on occasion find it efficient or desirable to combine requirements for services with the normal work we typically perform along with other requirements for services or products
which we do not provide. This technique of bundling of requirements reduces and/or eliminates our ability to compete as a prime contractor for such work. This approach requires that we take a subcontract role versus a
prime and as such may reduce our revenue opportunities and potentially impact our profit margins. This approach may also affect contracts which we currently perform as the prime contractor, when
completed or scheduled for recompetition, since those may be combined with other procurement requirements, creating consolidated procurements for which we either cannot compete due to the inclusion of products or services we do not
provide, or our probability of winning may be substantially reduced by the inclusion of such requirements outside of our normal business services.

If we fail to recruit and retain skilled employees or employees with the necessary security clearances, we might not be able to perform under our contracts or win new business and our growth may be limited.

To be competitive, we must have employees who have advanced information technology and technical services skills and who work well with our customers in a
government or defense-related environment. Often, these employees must have some of the highest security clearances in the United States. These employees are in great demand and are likely to remain a limited resource in the foreseeable future.
Recruiting, training and retention costs can place significant demands on our resources. If we are unable to recruit and retain a sufficient number of these employees, our ability to maintain and grow our business could be negatively impacted. If we
are required to engage larger numbers of contracted personnel, our profit margins could be adversely affected. In addition, some of our contracts contain provisions requiring us to commit to staff a program with certain personnel the customer
considers key to our successful performance under the contract. In the event we are unable to provide these key personnel or acceptable substitutions, the customer may terminate the contract, and we may not be able to recover certain incurred costs.

Failure to maintain strong relationships with other contractors could result in a decline in our revenues.

In 2007 and 2006, we derived 46.4% and 32.3% of our revenues, respectively, from contracts in which we acted as a subcontractor to other contractors or to
joint ventures that we and other contractors formed to bid on and execute particular contracts or programs. We expect to continue to depend on relationships with other contractors for a portion of our revenues for the foreseeable future. Our
business, prospects, financial condition or operating results could be harmed if other contractors eliminate or reduce their subcontracts or joint venture relationships with us, either because they choose to establish relationships with our
competitors or because they choose to directly offer services that compete with our business, or if the government terminates or reduces these other contractors programs or does not award them new contracts.

Our overall profit margins on our contracts may decrease and our results of operations could be adversely affected if materials and subcontract
revenue grow at a faster rate than labor-related revenues.

Our revenues are generated both from the efforts of our technical staff
(labor-related revenue) and from the receipt of payments for the costs of materials and subcontracts we use in connection with performing our services



18



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(materials and subcontract revenue). Generally, our materials and subcontract revenue have lower profit-margins than our labor-related revenues. If our
materials and subcontract revenue grow at faster rate than labor-related revenues, our overall profit margins may decrease and our profitability could be adversely affected.

We face risks associated with our international business.

Approximately 1.3% and 1.1% of our total consolidated revenues in 2007 and 2006, respectively, was generated by our entities outside of the United States. These international business operations are subject to a
variety of risks associated with conducting business internationally, including



| |  |  | Changes in or interpretations of foreign laws or policies that may adversely affect the performance of our services;
| | - |  | --------------------------------------------------------------------------------------------------------------------



| |  |  | Political instability in foreign countries;
| | - |  | -------------------------------------------



| |  |  | Imposition of inconsistent laws or regulations;
| | - |  | -----------------------------------------------



| |  |  | Conducting business in places where laws, business practices and customs are unfamiliar or unknown;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | Imposition of limitations on or increase of withholding and other taxes on payments by foreign subsidiaries or joint ventures;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------



| |  |  | Compliance with a variety of U.S. laws, including the Foreign Corrupt Practices Act, by us or subcontractors; and
| | - |  | -----------------------------------------------------------------------------------------------------------------



| |  |  | Compliance with U.S. export control regulations.
| | - |  | ------------------------------------------------

Although revenue generated from our international operations have not been significant to date, we do not know the impact that these regulatory, geopolitical and other factors could have on our business in the future.

Acquisitions or other joint ventures could result in operating difficulties, dilution or other adverse consequences to our business.

One of our key operating strategies is to selectively pursue acquisitions. We have made a number of acquisitions in the past, and
we expect that a significant portion of our future growth will continue to come from these transactions. We evaluate potential acquisitions, joint ventures and other investments on an ongoing basis. Our acquisitions pose many risks, including



| |  |  | We may not be able to identify suitable acquisition candidates at prices we consider attractive;
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | We may not be able to compete successfully for identified acquisition candidates, complete future acquisitions or accurately estimate the financial effect of
acquisitions on our business;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Future acquisitions may require us to issue common stock or spend significant cash, resulting in dilution of ownership or additional leverage;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We may have difficulty retaining an acquired companys key employees or customers;
| | - |  | ----------------------------------------------------------------------------------



| |  |  | We may have difficulty integrating acquired businesses, resulting in unforeseen difficulties, such as incompatible accounting, information management, or other
control systems;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Acquisitions may disrupt our business or distract our management from other responsibilities; and
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | As a result of an acquisition, we may need to record write-downs from future impairments of intangible assets, which could reduce our future reported earnings.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------

In connection with any acquisition that we make, there may be liabilities that we fail to discover or that we
inadequately assess. Acquired entities may not operate profitably or result in improved operating performance. Additionally, we may not realize anticipated synergies. If our acquisitions perform poorly, our business and financial results could be
adversely affected.



19



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Many of our federal government customers execute their procurement budgets through multiple award
contracts under which we are required to compete for post-award orders, or for which we may not be eligible to compete, potentially limiting our ability to win new contracts and increase revenue.

Budgetary pressures and reforms in the procurement process have caused many U.S. federal government customers to increasingly purchase goods and services
through multiple award ID/IQ contracts and other multiple award and/or GWAC vehicles. These contract vehicles require that we make sustained post-award efforts to obtain task orders under the relevant contract. There can be no assurance that we will
obtain revenues or otherwise sell successfully under these contract vehicles. Our failure to compete effectively in this procurement environment could harm our operating results.

Covenants in our credit facility may restrict our financial and operating flexibility.

We maintain a credit agreement with Bank of America N.A. The agreement provides for up to $300 million, with an option to increase an additional $100
million, in available borrowings through April 2012. Under the agreement, we are required to maintain specific financial covenants related to a leverage ratio and fixed charge coverage. The agreement also places limitations on additional borrowings,
mergers, and related-party transactions, payment of dividends, and contains limitations with respect to capital expenditures. Borrowings under the agreement are collateralized by our assets and bear interest at the Eurodollar Rate, or the
lenders base rate, plus market-rate spreads that are determined based on a company leverage ratio calculation. Our ability to satisfy these financial ratios can be affected by events beyond our control, and we cannot assure you that we will
meet these ratios. Default under our credit facility could allow the lenders to declare all amounts outstanding to be immediately due and payable. We have pledged substantially all of our assets to secure the debt under our credit facility. If the
lenders declare amounts outstanding under the credit facility to be due, the lenders could proceed against those assets. Any event of default, therefore, could have a material adverse effect on our business if the creditors determine to exercise
their rights. We also may incur future debt obligations that might subject us to restrictive covenants that could affect our financial and operational flexibility, restrict our ability to pay dividends on our common stock or subject us to other
events of default.

From time to time we may require consents or waivers from our lenders to permit actions that are prohibited by our
credit facility. If our lenders refuse to provide waivers of our credit facilitys restrictive covenants and/or financial ratios, then we may be in default under our credit facility, and we may be prohibited from undertaking actions that are
necessary or desirable to maintain and expand our business.

Our employees or subcontractors may engage in misconduct or other
improper activities, which could cause us to lose customers or affect our ability to contract with the federal government.

Because
we are a government contractor, employee or subcontractor fraud or other misconduct can occur, and such occurrences could have an adverse impact on our business and reputation. Misconduct by employees, subcontractors or joint venture partners could
include intentional failures to comply with federal laws including: federal government procurement regulations; proper handling of sensitive or classified information; compliance with the terms of our contracts that we receive; falsifying time
records or failures to disclose unauthorized or unsuccessful activities to us. These actions could lead to civil, criminal, and/or administrative penalties (including fines, imprisonment, suspension and/or debarment from performing federal
government contracts) and harm our reputation. The precautions we take to prevent and detect such activity may not be effective in controlling unknown or unmanaged risks or losses, and such misconduct by employees, subcontractors or joint venture
partners could result in serious civil or criminal penalties or sanctions or harm to our reputation, which could cause us to lose contracts or cause a reduction in revenue.

We may be liable for systems and service failures.

We create, implement and maintain information technology and technical services solutions that are often critical to our customers operations, including those of federal, state and local governments. We have



20



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experienced and may in the future experience some systems and service failures, schedule or delivery delays and other problems in connection with our work.
If our solutions, services, products or other applications have significant defects or errors, are subject to delivery delays or fail to meet our customers expectations, we may



| |  |  | Lose revenues due to adverse customer reaction,
| | - |  | -----------------------------------------------



| |  |  | Be required to provide additional services to a customer at no charge,
| | - |  | ----------------------------------------------------------------------



| |  |  | Receive negative publicity, which could damage our reputation and adversely affect our ability to attract or retain customers, and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------



| |  |  | Suffer claims for substantial damages against us.
| | - |  | -------------------------------------------------

In addition to any costs resulting from product warranties, contract performance or required corrective action, these failures may result in increased costs or loss of revenues if they result in customers postponing
subsequently scheduled work or canceling or failing to renew contracts.

While many of our contracts with the federal government limit our
liability for damages that may arise from negligence in rendering services to our customers, we cannot be sure that these contractual provisions will protect us from liability for damages if we are sued. Furthermore, our errors and omissions and
product liability insurance coverage may not continue to be available on reasonable terms or in sufficient amounts to cover one or more large claims, or the insurer may disclaim coverage as to some types of future claims. The successful assertion of
any large claim against us could seriously harm our business. Even if not successful, these claims could result in significant legal and other costs and may be a distraction to our management and may harm our reputation.

Security breaches in classified government systems could adversely affect our business.

Many of the programs we support and systems we develop, install and maintain involve managing and protecting information involved in intelligence,
national security and other classified government functions. While we have programs designed to comply with relevant security laws, regulations and restrictions, a security breach in one of these systems could cause serious harm to our business,
damage our reputation and prevent us from being eligible for further work on critical classified systems for federal government customers. Losses that we could incur from such a security breach could exceed the policy limits that we have for errors
and omissions or product liability insurance. Damage to our reputation or limitations on our eligibility for additional work resulting from a security breach in one of the systems we develop, install and maintain could materially reduce our revenue.

Our business depends upon obtaining and maintaining required security clearances.

Many of our federal government contracts require our employees to maintain various levels of security clearances, and we are required to maintain certain
facility security clearances complying with Department of Defense and the Intelligence Community requirements. Obtaining and maintaining security clearances for employees involves a lengthy process, and it is difficult to identify, recruit and
retain employees who already hold security clearances. If our employees are unable to obtain or retain security clearances or if our employees who hold security clearances terminate employment with us, the customer whose work requires cleared
employees could terminate the contract or decide not to renew it upon its expiration. In addition, we expect that many of the contracts on which we will bid will require us to demonstrate our ability to obtain facility security clearances and
perform work with employees who hold specified types of security clearances. To the extent we are not able to obtain facility security clearances or engage employees with the required security clearances for a particular contract, we may not be able
to bid on or win new contracts, or effectively re-bid on expiring contracts.

We face competition from other firms, many of which
have greater resources.

We operate in highly competitive markets and generally encounter intense competition to win contracts. We
compete with many other firms, ranging from small, specialized firms to large, diversified firms, many of which



21



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have substantially greater financial, management and marketing resources than we do. Our competitors may be able to provide our customers with different or
greater capabilities or benefits than we can provide in areas such as technical qualifications, past contract performance, geographic presence, price and the availability of qualified professional personnel. Our failure to compete effectively with
respect to any of these or other factors could cause our revenue and operating profits to decline. In addition, our competitors also have established or may establish relationships among themselves or with third parties to increase their ability to
address our customers needs. Accordingly, it is possible that new competitors or alliances among competitors may emerge.

Risks Related to Our
Stock

Our quarterly operating results may fluctuate.

Our quarterly revenues and operating results may fluctuate as a result of a number of factors, many of which are outside of our control. For these
reasons, comparing our operating results on a period-to-period basis may be of limited significance in some cases, and you should not rely on our past results as an indication of our future performance. While our financial results may be negatively
affected by any of the risk factors identified in this section of our Form 10-K, a number of factors could cause our revenues, cash flow and operating results to vary from quarter to quarter, including



| |  |  | Fluctuations in revenues earned on fixed-price contracts and contracts with a performance-based fee structure,
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | Commencement, completion or termination of contracts during any particular quarter,
| | - |  | -----------------------------------------------------------------------------------



| |  |  | Reallocation of funds to customers due to priority,
| | - |  | ---------------------------------------------------



| |  |  | Timing of award or performance incentive fee notices,
| | - |  | -----------------------------------------------------



| |  |  | Timing of significant bid and proposal costs,
| | - |  | ---------------------------------------------



| |  |  | Variable purchasing patterns under government contracts, BPAs and ID/IQ contracts,
| | - |  | ----------------------------------------------------------------------------------



| |  |  | Strategic decisions by us or our competitors, such as acquisitions, divestitures, spin-offs and joint ventures,
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | Seasonal or quarterly fluctuations in our workdays and staff utilization rates,
| | - |  | -------------------------------------------------------------------------------



| |  |  | Changes in Presidential administrations and senior federal government officials that affect the timing of technology procurement,
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------



| |  |  | Changes in federal government policy or budgetary measures that adversely affect government contracts in general, and
| | - |  | ---------------------------------------------------------------------------------------------------------------------



| |  |  | Increased purchase requests from customers for equipment and materials in connection with the federal governments fiscal year end, which may affect our
quarter operating results.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Because a relatively large amount of our expenses are fixed, cash flows from our operations
may vary significantly as a result of changes in the volume of services provided under existing contracts and the number of contracts that are commenced, completed or terminated during any quarter. We incur significant operating expenses during the
start-up and early stages of large contracts, and typically we do not receive corresponding payments in that same quarter. We may also incur significant or unanticipated expenses when a contract expires, terminates or is not renewed.

Mr. Pedersen, our Chairman and Chief Executive Officer, effectively controls our company, and his interests may not be aligned with those of
other stockholders.

As of December 31, 2007, Mr. Pedersen owned approximately 41.4% of our total outstanding shares of
common stock. Because holders of our Class B common stock are entitled to ten (10) votes per share, and



22



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Mr. Pedersen beneficially owned 14,279,813 shares of Class B Common Stock as of December 31, 2007, Mr. Pedersen thus owned or controlled
approximately 87.6% of the combined voting power of our stock as of December 31, 2007. Accordingly, Mr. Pedersen controls the vote on all matters submitted to a vote of our stockholders. As long as Mr. Pedersen beneficially owns a
majority of the combined voting power of our common stock, he will have the ability, without the consent of our public stockholders, to elect all members of our board of directors and to control our management and affairs.

Mr. Pedersens voting control may have the effect of preventing or discouraging transactions involving an actual or a potential change of
control of the Company, regardless of whether a premium is offered over then-current market prices. Mr. Pedersen will be able to cause a change of control of the Company. Mr. Pedersen could also cause a registration statement to be filed
and to become effective under the Securities Act of 1933, thereby permitting him to freely sell or transfer the shares of common stock that he owns. In addition, the interests of Mr. Pedersen may conflict with the interests of other holders of
our common stock.

Provisions in our charter documents and Delaware law may inhibit potential acquisition bids that you and other
stockholders may consider favorable, and the market price of our Class A common stock my be lower as a result.

There are
provisions in our certificate of incorporation and bylaws that make it more difficult for a third party to acquire, or attempt to acquire, control of our company, even if a change of control were considered favorable by you and other stockholders.
Among the provisions that could have an anti-takeover effect, are provisions relating to the following



| |  |  | The high vote nature of our Class B common stock;
| | - |  | -------------------------------------------------



| |  |  | The ability of the Board to issue preferred stock;
| | - |  | --------------------------------------------------



| |  |  | Stockholders cannot take action by written consent;
| | - |  | ---------------------------------------------------



| |  |  | Advance notice requirements for director nominations or other proposals by our stockholders.
| | - |  | --------------------------------------------------------------------------------------------

Item 1B.Unresolved SEC Staff Comments

We have not received any written comments from the SEC staff regarding our periodic or current reports under the Exchange Act that remain unresolved.

Item 2.Properties

Our facilities are leased in close proximity to our
customers. Since 1992, we have leased our corporate headquarters office building in Fairfax, Virginia. The lease on this facility expires in March 2010. As of December 31, 2007, we leased 32 additional operating facilities throughout the
metropolitan Washington, D.C. area and 49 facilities in other parts of the United States. We also have employees working at customer sites throughout the United States and in other countries. During 2005, we acquired two office buildings and another
smaller building (total of 12,720 square feet) on approximately 4.4 acres of land in King George, VA for $2 million. In 2007, we sold the land and office buildings in King George, VA to a third party. We are currently leasing space in one of
the office buildings we sold.



23



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The following table provides information concerning certain of our leased properties. No individual lease
is material to our business.



|                                         |  |                            |  |                             
|---------------------------------------- |  | -------------------------- |  | ----------------------------
|Lease Properties as of December 31, 2007 |  | Approximate Square Footage |  | GeneralUsage                
|Chantilly, VA                            |  | 185,000                    |  | General Office              
|Vienna , VA                              |  | 99,000                     |  | General Office              
|Arlington, VA                            |  | 84,000                     |  | General Office              
|Fairfax, VA                              |  | 81,000                     |  | General Office              
|Herndon, VA                              |  | 69,000                     |  | General Office              
|Springfield, VA                          |  | 55,000                     |  | General Office              
|Hanover, MD                              |  | 51,000                     |  | General Office and Warehouse
|Lorton, VA                               |  | 51,000                     |  | General Office              
|Lexington Park, MD                       |  | 43,000                     |  | General Office              
|Bethesda, MD                             |  | 35,000                     |  | General Office              
|Hunstville, AL                           |  | 33,000                     |  | General Office and Warehouse
|Glen Bernie, MD                          |  | 25,000                     |  | General Office              
|Fairmont, WV                             |  | 22,000                     |  | General Office              
|Sarasota, FL                             |  | 20,000                     |  | General Office              
|Miami, FL                                |  | 19,000                     |  | General Office              
|Other Locations                          |  | 280,000                    |  | General Office and Warehouse
|Foreign Locations                        |  | 4,000                      |  | General Office              

We do not anticipate any significant difficulty in renewing our leases or finding alternative
space to lease upon the expiration of our leases. Lease expiration dates range from years 2008 through 2017.

Item 3.Legal Proceedings

We are subject to certain legal proceedings, government audits, investigations, claims and disputes that arise in the
ordinary course of our business. Like most large government defense contractors, our contract costs are audited and reviewed on a continual basis by an in-house staff of auditors from the Defense Contract Audit Agency. In addition to these routine
audits, we are subject from time to time to audits and investigations by other agencies of the federal government. These audits and investigations are conducted to determine if our performance and administration of our government contracts are
compliant with contractual requirements and applicable federal statutes and regulations. An audit or investigation may result in a finding that our performance, systems and administration is compliant or, alternatively, may result in the government
initiating proceedings against us or our employees, including administrative proceedings seeking repayment of monies, suspension and/or debarment from doing business with the federal government or a particular agency, or civil or criminal
proceedings seeking penalties and/or fines. Audits and investigations conducted by the federal government frequently span several years.

Although we cannot predict the outcome of these and other legal proceedings, investigations, claims and disputes, based on the information now available to us, we do not believe the ultimate resolution of these matters, either individually
or in the aggregate, will have a material adverse effect on our business, prospects, financial condition or operating results.

Item 4.Submission of Matters to a Vote of Security Holders

No matters were submitted to a vote of security holders
during the fourth quarter of the year ended December 31, 2007.



24



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PART II

Item 5.Market for Registrants Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information

Our Class A common stock has been quoted on the Nasdaq Stock Market under
the symbol MANT since our initial public offering on February 7, 2002. The following table sets forth, for the periods indicated, the high and low prices of our shares of common stock, as reported on the Nasdaq Stock Market.



|               |  |      |       |     |   |      
|-------------- |  | ---- | ----- | --- | - | -----
|2007           |  | High |       | Low
|First Quarter  |  | $    | 38.04 |     | $ | 32.42
|Second Quarter |  |      | 34.49 |     |   | 30.37
|Third Quarter  |  |      | 37.80 |     |   | 29.71
|Fourth Quarter |  |      | 48.45 |     |   | 34.87
|               |  |     
|2006           |  | High |       | Low
|First Quarter  |  | $    | 33.97 |     | $ | 25.86
|Second Quarter |  |      | 38.75 |     |   | 28.07
|Third Quarter  |  |      | 33.32 |     |   | 25.75
|Fourth Quarter |  |      | 37.97 |     |   | 30.14

There is no established public market for our Class B common stock.

As of February 29, 2008, there were 30 holders of record of our Class A common stock and three holders of record of our Class B common stock.
The number of holders of record of our Class A common stock is not representative of the number of beneficial holders because many of the shares are held by depositories, brokers or nominees.

Dividend Policy

Currently, we intend to retain any
earnings for the future operation and growth of our business. In addition, our credit facility restricts us from paying cash dividends to holders of our common stock. As a result, we do not anticipate paying any cash dividends in the foreseeable
future. No dividends have been declared on any class of our common stock since our initial public offering in 2002. Any future dividends declared would be at the discretion of our board of directors and would depend, among other factors, upon our
results of operations, financial condition and cash requirements, and the terms of our credit facility and other financing agreements at the time such payment is considered.



25



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Item 6.Selected Financial Data

The selected financial data presented below for each of the five years ended December 31, 2007 is derived from our audited consolidated financial
statements. The selected financial data presented below should be read in conjunction with our consolidated financial statements, the notes to our consolidated financial statements and Item 7 Managements Discussion and Analysis of
Financial Condition and Results of Operations.



|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|------------------------------------------------------------------------- |  | ---------------------------------------- | --------- | - | -------- | - | --------- | -------- |  | - | -------- | - |  | -------- | ------- | - |  | - | ------- | -
|                                                                          |  | Year Ended December 31,                  |          
|                                                                          |  | 2007 (a)                                 |           |   | 2006 (b) |   |           | 2005 (c) |  |   | 2004 (d) |   |  | 2003 (e) |        
|                                                                          |  | (In thousands, except per share amounts) |          
|Statement of Income Data:                                                 |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Revenues                                                                  |  | $                                        | 1,448,098 |   |          | $ | 1,137,178 |          |  | $ | 980,289  |   |  | $        | 826,928 |   |  | $ | 667,234 |  
|Cost of services                                                          |  |                                          | 1,214,150 |   |          |   | 944,150   |          |  |   | 805,853  |   |  |          | 677,223 |   |  |   | 545,481 |  
|General and administrative expenses                                       |  |                                          | 120,244   |   |          |   | 102,378   |          |  |   | 90,258   |   |  |          | 81,238  |   |  |   | 66,980  |  
|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Operating income                                                          |  |                                          | 113,704   |   |          |   | 90,650    |          |  |   | 84,178   |   |  |          | 68,467  |   |  |   | 54,773  |  
|Interest expense                                                          |  |                                          | (5,103    | ) |          |   | (2,375    | )        |  |   | (3,165   | ) |  |          | (2,422  | ) |  |   | (2,295  | )
|Interest income                                                           |  |                                          | 1,261     |   |          |   | 809       |          |  |   | 894      |   |  |          | 495     |   |  |   | 339     |  
|Other items, net                                                          |  |                                          | 263       |   |          |   | 1,337     |          |  |   | 3,372    |   |  |          | 554     |   |  |   | 1,034   |  
|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Income from continuing operations before income taxes and equity earnings |  |                                          | 110,125   |   |          |   | 90,421    |          |  |   | 85,279   |   |  |          | 67,094  |   |  |   | 53,851  |  
|Provision for income taxes                                                |  |                                          | (42,798   | ) |          |   | (34,825   | )        |  |   | (34,137  | ) |  |          | (25,743 | ) |  |   | (21,594 | )
|Earnings (losses) in equity of unconsolidated subsidiaries                |  |                                          |          |   |          |   |          |          |  |   | 471      |   |  |          | 567     |   |  |   | (669    | )
|Gain on disposal of equity method investment                              |  |                                          |          |   |          |   |          |          |  |   | 1,590    |   |  |          |        |   |  |   |        |  
|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Income from continuing operations                                         |  |                                          | 67,327    |   |          |   | 55,596    |          |  |   | 53,203   |   |  |          | 41,918  |   |  |   | 31,588  |  
|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|(Loss) gain from discontinued operations, net of taxes                    |  |                                          | (458      | ) |          |   | (4,895    | )        |  |   | (9,010   | ) |  |          | (17,211 | ) |  |   | 3,572   |  
|Gain on disposal of discontinued operation, net of taxes (sold to CEO)    |  |                                          | 338       |   |          |   |          |          |  |   |         |   |  |          |        |   |  |   |         |  
|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Net income                                                                |  | $                                        | 67,207    |   |          | $ | 50,701    |          |  | $ | 44,193   |   |  | $        | 24,707  |   |  | $ | 35,160  |  
|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Basic earnings per share from continuing operationsClass A and B (f)     |  | $                                        | 1.97      |   |          | $ | 1.66      |          |  | $ | 1.62     |   |  | $        | 1.30    |   |  | $ | 0.99    |  
|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Diluted earnings per share from continuing operationsClass A and B (f)   |  | $                                        | 1.95      |   |          | $ | 1.64      |          |  | $ | 1.60     |   |  | $        | 1.29    |   |  | $ | 0.98    |  
|                                                                          |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Balance Sheet Data:                                                       |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Cash and cash equivalents                                                 |  | $                                        | 8,048     |   |          | $ | 41,510    |          |  | $ | 5,678    |   |  | $        | 22,963  |   |  | $ | 9,264   |  
|Working capital                                                           |  | $                                        | 68,409    |   |          | $ | 168,189   |          |  | $ | 103,576  |   |  | $        | 127,034 |   |  | $ | 135,574 |  
|Total assets                                                              |  | $                                        | 937,503   |   |          | $ | 613,252   |          |  | $ | 555,985  |   |  | $        | 468,402 |   |  | $ | 436,134 |  
|Long-term debt                                                            |  | $                                        | 39,000    |   |          | $ |          |          |  | $ | 21       |   |  | $        | 104     |   |  | $ | 25,184  |  
|Total stockholders equity                                                |  | $                                        | 551,305   |   |          | $ | 459,016   |          |  | $ | 378,582  |   |  | $        | 320,396 |   |  | $ | 287,651 |  
|Statement of Cash Flows Data:                                             |  |                                          |           |   |          |   |           |          |  |   |          |   |  |          |         |   |  |   |         |  
|Cash flow from operating activities                                       |  | $                                        | 63,324    |   |          | $ | 84,356    |          |  | $ | 61,486   |   |  | $        | 27,285  |   |  | $ | 391     |  
|Cash flow from investing activities                                       |  | $                                        | (275,286  | ) |          | $ | (25,709   | )        |  | $ | (105,617 | ) |  | $        | (17,440 | ) |  | $ | (74,241 | )
|Cash flow from financing activities                                       |  | $                                        | 178,500   |   |          | $ | (22,815   | )        |  | $ | 26,846   |   |  | $        | 3,854   |   |  | $ | 1,121   |  

In 2007, we reclassified insignificant amounts relating to unresolved issues of prior disposals
from held for sale to held and used for all periods presented.



|a) | On December 18, 2007, we acquired McDonald Bradley, Inc. (MBI) for $78.7 million, which includes $0.3 million in transaction fees. The purchase price included a working capital
adjustment which is subject to a closing balance sheet review. MBI added $1.2 million in revenue to our 2007 results. For further information on acquisitions see Note 3 to the Consolidated Financial Statements in Item 8.
|-- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



26



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On May 7, 2007 we acquired SRS Technologies, Inc. (SRS) for $199.0 million, which includes $1.0
million in transaction fees. The purchase price included a working capital adjustment which is subject to further negotiations with the seller pursuant to the results of the closing balance sheet audit. SRS added $139.1 million in revenue to our
2007 results. For further information on acquisitions see Note 3 to the Consolidated Financial Statements in Item 8.

On
February 23, 2007 we sold our MSM Security Services subsidiary business (MSM) to MSM Security Services Holdings, LLC for $3.0 million in cash. The sale resulted in a pre-tax gain of $0.6 million. MSM Security Services Holdings, LLC is solely
owned by George J. Pedersen, ManTechs Chairman and Chief Executive Officer. For further information on the sale of MSM see Note 15 to the Consolidated Financial Statements in Item 8.

In January 2007, Mr. Pedersen received a distribution of 609,296 shares of Class B Common Stock, which had been held by the ManTech International
Corporation Supplemental Executive Retirement Plan for the benefit of George J. Pedersen (GJP SERP). We recognized an $8.6 million tax benefit on the distribution from the trust. The tax benefit was recorded to additional paid-in-capital.



|b) | On October 5, 2006, we acquired GRS Solutions, Inc (GRS) for $17.8 million in cash. Subsequent to the acquisition, contingent consideration of $2.2 million was paid to the
shareholders of GRS. GRS added $2.7 million in revenue to our 2006 results. For further information on acquisitions see Note 3 to the Consolidated Financial Statements in Item 8.
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

On October 31, 2006, we sold assets related to our NetWitness® operation to the NetWitness Acquisition Corporation for $2.0 million in cash and an equity stake of less than 5% in the new company. We recorded approximately a $1.0 million pre-tax gain on the sale.

On January 1, 2006, we adopted SFAS No. 123 (revised 2004), Share-Based Payment.As a result, we recorded $5.7 million
of expense in general and administrative expenses. For further information, see Note 10 to the Consolidated Financial Statements in Item 8.



|c) | On February 11, 2005, we sold our ManTech Environmental Technology, Inc. (METI) subsidiary to another company for $7.0 million, which resulted in a pre-tax gain of
approximately $3.7 million. METI had revenues of $1.4 million and $13.2 million in 2005 and 2004, respectively.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

During the
first quarter of 2005, we decided to exit the personnel security investigation business and sell MSM. We classified our MSM subsidiary as held for sale in our consolidated balance sheets and in discontinued operations for our consolidated statement
of income. For the fourth quarter of 2005, we recorded a loss of $3.6 million on the valuation of these assets based on offers received from potential buyers. For further information see Note 15 to the Consolidated Financial Statements in
Item 8.

On May 31, 2005, we acquired Gray Hawk Systems, Inc. for $101.8 million, including acquisition-related cost. As a result
of this acquisition, revenue increased $52.9 million in 2005. For further information on acquisitions see Note 3 to the Consolidated Financial Statements in Item 8.

During December 2005, we sold our 40 percent interest in Vosper-ManTech joint venture in the United Kingdom for approximately $4.3 million including accrued dividends. The sale resulted in an approximate $1.6 million
pre tax gain recorded in gain on disposal of equity method investment.



|d) | On February 27, 2004, we acquired certain operations from Affiliated Computer Services, Inc. (ACS) for $6.5 million, and on June 1, 2004, acquired additional operations
from ACS for $1.5 million. As a result of these acquisitions, revenue increased $27.5 million in 2004.
|-- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

During 2004, we
experienced a significant decline in our MSM business primarily related to losses recorded on a Defense Security Services (DSS) contract which ended in the fourth quarter of 2004. For 2004, MSMs revenues were down $18.9 million from 2003,
which contributed to the loss from discontinued operations.



|e) | On February 28, 2003, we acquired Integrated Data Systems (IDS) for approximately $63.7 million, including acquisition-related costs. IDS added $53.5 million in revenues in
2003.
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

On March 5, 2003, we acquired MSM for approximately $4.9 million.



|f) | The holders of each share of Class A common stock are entitled to one vote per share, and the holders of each share of Class B common stock are entitled to ten votes per share.
For more information on earnings per share including the two class method see Note 4 to the Consolidated Financial Statements in Item 8.
|-- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



27



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Item 7.Managements Discussion and Analysis of Financial Condition and Results of Operations

The following discussion of our financial condition and results of operations should be read together with the consolidated
financial statements and the notes to those statements included in Item 8 of this document. This discussion contains forward-looking statements that involve risks and uncertainties. This discussion addresses primarily our continuing operations,
except in the discussion under the heading, Discontinued Operations. For more information on our discontinued operations, please see Note 15 to our consolidated financial statements.

Overview

We are a provider of innovative
technologies and solutions for mission-critical national security programs for the Intelligence Community, the Departments of Defense, State, Homeland Security, and Justice, and other U.S. federal government agencies. Our expertise includes
engineering, systems integration, software services, enterprise architecture, information assurance and security architecture, intelligence operations and analysis support, network and critical infrastructure protection, information operations and
computer forensics, information technology, communications integration and engineering support. With approximately 7,300 highly qualified employees, we operate in the United States and over 40 countries worldwide.

We derive revenue primarily from contracts with U.S. government agencies that are focused on national security and as a result, funding for our programs
is generally linked to trends in U.S. government spending in the areas of defense, intelligence and homeland security. Related to the evolving terrorist threats and world events, the U.S. government has substantially increased its overall defense,
intelligence and homeland security budgets. In 2007, our revenue increased mainly as a result of the expansion of our sustainment and countermine support provided in military deployed environments with U.S. and allied forces in support of
peace-keeping efforts worldwide; efforts involving telecommunications, infrastructure, maintenance, repair, from our work with intelligence agencies in U.S; and the acquisitions that occurred in the past two years.

For the three years ended December 31, 2007, over 93% of our revenues were derived from our customers in the Intelligence Community and the
Department of Defense. These customers include the Office of the Secretary of Defense, the Department of State, the Department of Homeland Security, various intelligence agencies, federal intelligence and terrorism task forces, the U.S. Army, Navy,
Air Force and Marine Corps and joint military commands. We also provide solutions to federal government civilian agencies, including NASA and PTO as well as to state and local governments and commercial customers. The following table shows our
revenue from each type of customer as a percentage of our total revenue for the period shown.



|                                                                |  |                          |   |  |       |   |  |       |  
|--------------------------------------------------------------- |  | ------------------------ | - |  | ----- | - |  | ----- | -
|                                                                |  | Years Ended December 31, |  
|                                                                |  | 2007                     |   |  | 2006  |   |  | 2005  |  
|Department of Defense and intelligence agencies                 |  | 93.3                     | % |  | 95.2  | % |  | 94.9  | %
|Federal civilian agencies                                       |  | 4.5                      | % |  | 2.6   | % |  | 3.1   | %
|State agencies, international agencies, and commercial entities |  | 2.2                      | % |  | 2.2   | % |  | 2.0   | %
|                                                                |  |                          |   |  |       |   |  |       |  
|Total Revenue                                                   |  | 100.0                    | % |  | 100.0 | % |  | 100.0 | %
|                                                                |  |                          |   |  |       |   |  |       |  

We provide our services and solutions under three types of contracts: time and materials; cost
reimbursable; and fixed price. Our contract mix varies from year to year due to numerous factors, including our business strategies and federal government procurement objectives. The following table shows our revenue from each of these types of
contracts as a percentage of our total revenue for the periods shown.



|                   |  |                          |   |  |       |   |  |       |  
|------------------ |  | ------------------------ | - |  | ----- | - |  | ----- | -
|                   |  | Years Ended December 31, |  
|                   |  | 2007                     |   |  | 2006  |   |  | 2005  |  
|Cost reimbursable  |  | 23.4                     | % |  | 24.7  | % |  | 26.8  | %
|Time and materials |  | 62.9                     | % |  | 64.5  | % |  | 63.0  | %
|Fixed price        |  | 13.7                     | % |  | 10.8  | % |  | 10.2  | %
|                   |  |                          |   |  |       |   |  |       |  
|Total revenue      |  | 100.0                    | % |  | 100.0 | % |  | 100.0 | %
|                   |  |                          |   |  |       |   |  |       |  



28



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Time and materials contracts. Under time and materials contracts, we are reimbursed for labor at
fixed hourly rates and generally reimbursed separately for allowable materials, costs and expenses. To the extent that our actual labor costs under a time and materials contract are higher or lower than the billing rates under the contract, our
profit under the contract may be either greater or less than we anticipated or we may suffer a loss under the contract. We recognize revenues under time and materials contracts by multiplying the number of direct labor hours expended by the contract
billing rates and adding the effect of other billable direct costs. In general, we realize a higher profit margin on work performed under time and materials contracts than cost reimbursable contracts.

Cost reimbursable contracts. Under cost reimbursable contracts, we are reimbursed for costs that are determined to be reasonable, allowable and
allocable to the contract, and paid a fee representing the profit margin negotiated between us and the contracting agency, which may be fixed or performance based. Under cost reimbursable contracts we recognize revenues and an estimate of applicable
fees earned as costs are incurred. We consider fixed fees under cost reimbursable contracts to be earned in proportion to the allowable costs incurred in performance of the contract. For performance based fees under cost reimbursable contracts, we
recognize the relevant portion of the expected fee to be awarded by the client at the time such fee can be reasonably estimated, based on factors such as our prior award experience and communications with the client regarding performance. For cost
reimbursable contracts with performance-based fee incentives that are subject to the provisions of U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 104, RevenueRecognition (SAB104), we recognize the relevant portion
of the fee upon customer approval. In general, cost reimbursable contracts are the least profitable of our government contracts.

Fixed
price contracts. Under fixed price contracts, we perform specific tasks for a fixed price. Compared to cost reimbursable and time and materials contracts, fixed price contracts generally offer higher profit margin opportunities but involve
greater financial risk because we bear the impact of cost overruns in return for the full benefit of any cost savings. We generally do not undertake complex, high-risk work, such as long-term software development, under fixed price terms. Fixed
price contracts may include either a product delivery or specific service performance over a defined period. Revenue on fixed price contracts that provide for the Company to render services throughout a period is recognized as earned according to
contract terms as the service is provided on a proportionate performance basis. These contracts are generally less than six months in duration. For fixed price contracts that provide for the delivery of a specific product with related customer
acceptance provisions, revenues are recognized as those products are delivered and accepted.

We derive a majority of our revenues from
governmental contracts under which we act as a prime contractor. We also provide services to the government as a subcontractor. The following table shows our revenues as prime contractor and as subcontractor as a percentage of our total revenue for
the following periods:



|                       |  |                          |   |  |       |   |  |       |  
|---------------------- |  | ------------------------ | - |  | ----- | - |  | ----- | -
|                       |  | Years Ended December 31, |  
|                       |  | 2007                     |   |  | 2006  |   |  | 2005  |  
|Prime contract revenue |  | 53.6                     | % |  | 67.7  | % |  | 81.3  | %
|Subcontract revenue    |  | 46.4                     | % |  | 32.3  | % |  | 18.7  | %
|                       |  |                          |   |  |       |   |  |       |  
|Total revenue          |  | 100.0                    | % |  | 100.0 | % |  | 100.0 | %
|                       |  |                          |   |  |       |   |  |       |  

We expect this trend to reverse and the prime contract revenue percentage to increase in future
periods due to new contract awards expected in 2008.

Revenue

Substantially all of our revenue is derived from services and solutions provided to the federal government or to prime contractors supporting the federal
government, including services provided by our employees, our subcontractors and through solutions that includes third-party hardware and software that we purchase and



29



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integrate as a part of our overall solutions. The level of hardware and software purchases we made in support of solutions we provide to our clients
increased significantly during 2007. These requirements may vary from period to period depending on specific contract and client requirements. Since we earn higher profits from labor services that our employees provide compared with subcontracted
efforts and other reimbursable items such as hardware and software purchases for clients, we seek to optimize our labor services on all of our engagements.

Cost of Services

Cost of services primarily includes direct costs incurred to provide our services
and solutions to customers. The most significant portion of these costs are direct labor costs, including salaries and wages, plus associated fringe benefits, of our employees directly serving customers, in addition to the related management,
facilities and infrastructure costs. Cost of services also includes other direct costs, such as the costs of subcontractors and outside consultants, and third-party materials, such as hardware or software that we purchase and provide to the customer
as part of an integrated solution. Since we earn higher profits on our own labor services, we expect the ratio of cost of services as a percent of revenue to decline when our labor services mix increases relative to subcontracted labor or
third-party material. Conversely, as subcontracted labor or third-party material purchases for customers increase relative to our own labor services, we expect the ratio of cost of services as a percent of revenue to increase. Changes in the mix of
services and equipment provided under our contracts can result in variability in our contract margins.

General and Administrative
Expenses

General and administrative expenses include the salaries and wages, plus associated fringe benefits of our employees not
performing work directly for clients. Among the functions covered by these costs are facilities, corporate business development, bid and proposal, contracts administration, finance and accounting, legal, corporate governance, and executive and
senior management. In addition, we include stock-based compensation, as computed under SFAS No. 123R, as well as depreciation and amortization. Depreciation and amortization includes the depreciation of computers, furniture and other equipment,
the amortization of third party software we use internally, leasehold improvements and intangible assets. Identifiable intangible assets includes customer relationships and contract backlogs acquired in business combinations are amortized over their
estimated useful lives.

Interest Expense and Interest Income

Interest expense is primarily related to interest expense incurred or accrued under our outstanding borrowings and notes payable, deferred financing
charges and interest on capital leases. Interest income is primarily from cash on hand and notes receivable.

Provision for Income Taxes

Our effective income tax rates are approximately 38.9%, 38.5% and 39.1% for the years ended 2007, 2006 and 2005, respectively.



30



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Results of Operations

Year Ended December 31, 2007 Compared to Year Ended December 31, 2006

Consolidated Statements of
Income

The following table sets forth certain items from our consolidated statements of income and the relative percentages that
certain items of expense and earnings bear to revenue as well as the year over year change from December 31, 2006 to December 31, 2007.



|                                                                   |  |                          |           |   |                     |   |           |                |  |       |         |  |       |              |  |   |         |   |  |        |  
|------------------------------------------------------------------ |  | ------------------------ | --------- | - | ------------------- | - | --------- | -------------- |  | ----- | ------- |  | ----- | ------------ |  | - | ------- | - |  | ------ | -
|                                                                   |  | Years Ended December 31, |           |   | Year to Year Change |  
|                                                                   |  | 2007                     |           |   | 2006                |   |           | 2007           |  |       | 2006    |  |       | 2006 to 2007 | 
|                                                                   |  | Dollars                  |           |   | Percentages         |   |           | Dollars        |  |       | Percent | 
|                                                                   |  |                          |           |   |                     |   |           | (in thousands) |  |       |         |  |       |              | 
|REVENUE                                                            |  | $                        | 1,448,098 |   |                     | $ | 1,137,178 |                |  | 100.0 | %       |  | 100.0 | %            |  | $ | 310,920 |   |  | 27.3   | %
|Cost of services                                                   |  |                          | 1,214,150 |   |                     |   | 944,150   |                |  | 83.8  | %       |  | 83.0  | %            |  |   | 270,000 |   |  | 28.6   | %
|General and administrative expenses                                |  |                          | 120,244   |   |                     |   | 102,378   |                |  | 08.3  | %       |  | 09.0  | %            |  |   | 17,866  |   |  | 17.5   | %
|                                                                   |  |                          |           |   |                     |   |           |                |  |       |         |  |       |              |  |   |         |   |  |        |  
|OPERATING INCOME                                                   |  |                          | 113,704   |   |                     |   | 90,650    |                |  | 07.9  | %       |  | 08.0  | %            |  |   | 23,054  |   |  | 25.4   | %
|Gain on disposal of operations                                     |  |                          |          |   |                     |   | 955       |                |  | 00.0  | %       |  | 00.1  | %            |  |   | (955    | ) |  | -100.0 | %
|Interest expense                                                   |  |                          | (5,103    | ) |                     |   | (2,375    | )              |  | 00.4  | %       |  | 00.2  | %            |  |   | (2,728  | ) |  | 114.9  | %
|Interest income                                                    |  |                          | 1,261     |   |                     |   | 809       |                |  | 00.1  | %       |  | 00.1  | %            |  |   | 452     |   |  | 55.9   | %
|Other income (expense), net                                        |  |                          | 263       |   |                     |   | 382       |                |  | 00.0  | %       |  | 00.0  | %            |  |   | (119    | ) |  | -31.2  | %
|                                                                   |  |                          |           |   |                     |   |           |                |  |       |         |  |       |              |  |   |         |   |  |        |  
|INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES              |  |                          | 110,125   |   |                     |   | 90,421    |                |  | 07.6  | %       |  | 08.0  | %            |  |   | 19,704  |   |  | 21.8   | %
|Provision for income taxes                                         |  |                          | (42,798   | ) |                     |   | (34,825   | )              |  | 03.0  | %       |  | 03.1  | %            |  |   | (7,973  | ) |  | 22.9   | %
|INCOME FROM CONTINUING OPERATIONS                                  |  |                          | 67,327    |   |                     |   | 55,596    |                |  | 04.6  | %       |  | 04.9  | %            |  |   | 11,731  |   |  | 21.1   | %
|Loss from discontinued operations, net of taxes                    |  |                          | (458      | ) |                     |   | (4,895    | )              |  | 00.0  | %       |  | 00.4  | %            |  |   | 4,437   |   |  | -90.6  | %
|Gain on sale of discontinued operation, net of taxes (sold to CEO) |  |                          | 338       |   |                     |   |          |                |  | 00.0  | %       |  | 00.0  | %            |  |   | 338     |   |  | 100.0  | %
|                                                                   |  |                          |           |   |                     |   |           |                |  |       |         |  |       |              |  |   |         |   |  |        |  
|NET INCOME                                                         |  | $                        | 67,207    |   |                     | $ | 50,701    |                |  | 04.6  | %       |  | 04.5  | %            |  | $ | 16,506  |   |  | 32.6   | %
|                                                                   |  |                          |           |   |                     |   |           |                |  |       |         |  |       |              |  |   |         |   |  |        |  

Revenues

Revenues increased 27.3% to $1,448.1 million for the year ended December 31, 2007, compared to $1,137.2 million for the same period in 2006. The acquisition of SRS in May 2007 added $139.1 million to our revenues
for the year ended December 31, 2007. Additionally, the increase is attributable to countermine/counter improvised explosive devices (IED) support in Iraq and Afghanistan. One contract for the installation and repair of systems designed for
countermine programs and counter IEDs accounted for $209.2 million and $102.4 million of revenues for the years ended December 31, 2007 and 2006, respectively. There were increases on other programs related to the global war on terrorism.
We also experienced growth on U.S. based support contracts. GRS, acquired during the fourth quarter of 2006, contributed $13.9 million to our revenues for the year ended December 31, 2007. The MBI acquisition on December 18, 2007 had an
insignificant impact to our 2007 revenue.

We are expecting the growth to continue in 2008 as a result of our two recent acquisitions, SRS
and MBI, and our continued support of the Global War on Terror, including wars in Iraq and Afghanistan. Possible future changes in U.S. policy and tactics related to the wars may impact our future performance trend; however, we are not able to
predict the impact of such changes at this time.



31



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Cost of services

Cost of services increased 28.6% to $1,214.2 million for the year ended December 31, 2007, compared to $944.2 million for the same period in 2006. The increase is related to the increase in revenues for the
period. As a percentage of revenues, cost of services increased 0.8%, to 83.8% for the year ended December 31, 2007 compared to 83.0% for the same period in 2006. This increase was due to larger purchases of equipment and materials directly for
contracts and increased use of subcontractors in support of our contracts. The increase in other direct costs resulted in lower income from continuing operations primarily due to generally lower profit margins on purchases of equipment and
materials. Direct labor costs, which include applicable fringe benefits and overhead, increased by 17.1% due to the acquisition of SRS and the growth of our work force. As a percentage of revenues, direct labor costs decreased 3.6% to 41.0% for the
year ended December 31, 2007 compared to 44.6% for the same period in 2006 due to the significant growth in other direct cost. Other direct costs increased by 41.9% over the same period in 2006, from $437.4 million to $620.7 million. The
increase in other direct costs is due to the increase in purchases of equipment and materials, and increased use of subcontractors as noted above. As a percentage of revenues, other direct costs increased from 38.5% for the year ended
December 31, 2006 to 42.8% for the same period in 2007.

General and administrative

General and administrative expenses increased 17.5% to $120.2 million for the year ended December 31, 2007, compared to $102.4 million for the same
period in 2006. The increase in expense during the year resulted primarily from the acquisition and integration of SRS, increased bid and proposal spending, a net realizable value adjustment related to an intangible asset of a previous acquisition,
and share-based compensation. In addition, amortization of intangibles increased due to our acquisition of SRS in May 2007 as well as our acquisition of GRS Solutions in October 2006. As a percentage of revenues, general and administrative expenses
decreased to 8.3% from 9.0% for the years ended December 31, 2007 and 2006, respectively. The reduction as a percentage of revenues was due largely to a management cost cutting initiative in 2007 and leveraging our administrative expenses over
a larger revenue base. For the years ended December 31, 2007 and 2006, we recognized $6.7 million and $5.7 million in share-based compensation expense under SFAS No. 123R, respectively.

Gain on disposal of operations

There were no gains on disposal of operations in 2007. In October 31, 2006, we sold assets
related to our NetWitness® business to the NetWitness Acquisition Corporation, an unrelated third party. We recorded a $1.0 million pre-tax gain in 2006 on the transaction. For additional
information see Gain on Disposal of Operations and Equity Method Investment, below.

Interest expense

Interest expense increased to $5.1 million for the year ended December 31, 2007, compared with $2.4 million for the same period in 2006. For the year
ended December 31, 2007, we had an average debt balance of $84.7 million compared to $28.4 million for the same period in 2006. The increase in our average debt balance in 2007 was primarily driven by increased borrowings to fund the
acquisitions of SRS and MBI. In 2006, we had paid off all borrowings under a previous credit facility which had been used to finance the acquisition of Gray Hawk Systems in 2005. As we intend to use our new credit facility to finance our acquisition
strategy, our interest expense could increase in the future.

Starting in September 2007, the Federal Reserve reduced the federal funds
rate three times. In January 2008, the federal funds rate was reduced an additional three-fourths of a percentage point to 3.5%. The federal funds rate is the interest rate at which banks lend each other money. Changes to the federal funds rate can
impact the rate at which we borrow money under our credit facility (for additional information see New Credit Agreement, below). Additional changes to the federal funds rate could cause our interest expense to fluctuate in the future.



32



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Interest income

Interest income increased to $1.3 million for the year ended December 31, 2007, compared to $0.8 million for the same period in 2006. The fluctuation is due to increased cash on hand for almost half of the year
ended December 31, 2007, collection of interest on an old receivable, and an income tax refund. As we used a combination of cash on hand and our new credit facility to finance the acquisition of SRS in May 2007 and McDonald Bradley in December
2007, our cash balance was reduced significantly during the second half of 2007.

Loss from discontinued operations

On February 23, 2007, we sold our MSM subsidiary. Prior to that date, MSM was classified as held for sale in the consolidated balance sheets and
discontinued operations, net of applicable income taxes in the consolidated statements of income. Loss from discontinued operations decreased to $0.5 million for the year ended December 31, 2007, compared with $4.9 million for the same period
in 2006. The sale of MSM resulted in the reflection of only two months of MSM operations in 2007 versus a full year of MSM operations for the same period in 2006. For additional information see Discontinued Operations, below.

Gain on sale of discontinued operation

On February 23, 2007, we sold MSM to MSM Security Services Holdings, LLC (an entity that is solely owned by George J. Pedersen, our Chairman and Chief Executive Officer) for $3.0 million in cash. We recorded a $0.3 million net gain on
the transaction. For additional information see Discontinued Operations, below.

Net income

Net income increased 32.6% to $67.2 million for the year ended December 31, 2007, compared to $50.7 million for the same period in 2006. The increase
is a result of higher revenue, increased income from continuing operations, and a reduced net loss on discontinued operations of $0.5 million in 2007 versus a loss of $4.9 million for the same period in 2006. Our effective tax rates for the years
ended December, 2007 and 2006 were 38.9% and 38.5%, respectively.



33



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Year Ended December 31, 2006 Compared to Year Ended December 31, 2005

Consolidated Statements of Income

The following table sets forth certain items from our consolidated statements of income and the relative percentages that certain items of expense and earnings bear to revenue as well as the year over year change from December 31, 2005
to December 31, 2006.



|                                                                          |  |                          |           |   |                     |   |         |         |  |       |         |  |       |              |  |   |         |   |  |        |  
|------------------------------------------------------------------------- |  | ------------------------ | --------- | - | ------------------- | - | ------- | ------- |  | ----- | ------- |  | ----- | ------------ |  | - | ------- | - |  | ------ | -
|                                                                          |  | Years Ended December 31, |           |   | Year to Year Change |  
|                                                                          |  | 2006                     |           |   | 2005                |   |         | 2006    |  |       | 2005    |  |       | 2005 to 2006 | 
|                                                                          |  | Dollars                  |           |   | Percentages         |   |         | Dollars |  |       | Percent | 
|REVENUE                                                                   |  | $                        | 1,137,178 |   |                     | $ | 980,289 |         |  | 100.0 | %       |  | 100.0 | %            |  | $ | 156,889 |   |  | 16.0   | %
|Cost of services                                                          |  |                          | 944,150   |   |                     |   | 805,853 |         |  | 83.0  | %       |  | 82.2  | %            |  |   | 138,297 |   |  | 17.2   | %
|General and administrative expenses                                       |  |                          | 102,378   |   |                     |   | 90,258  |         |  | 09.0  | %       |  | 09.2  | %            |  |   | 12,120  |   |  | 13.4   | %
|                                                                          |  |                          |           |   |                     |   |         |         |  |       |         |  |       |              |  |   |         |   |  |        |  
|OPERATING INCOME                                                          |  |                          | 90,650    |   |                     |   | 84,178  |         |  | 08.0  | %       |  | 08.6  | %            |  |   | 6,472   |   |  | 7.7    | %
|Gain on disposal of operations                                            |  |                          | 955       |   |                     |   | 3,698   |         |  | 00.1  | %       |  | 00.4  | %            |  |   | (2,743  | ) |  | -74.2  | %
|Interest expense                                                          |  |                          | (2,375    | ) |                     |   | (3,165  | )       |  | 00.2  | %       |  | 00.3  | %            |  |   | 790     |   |  | -25.0  | %
|Interest income                                                           |  |                          | 809       |   |                     |   | 894     |         |  | 00.1  | %       |  | 00.1  | %            |  |   | (85     | ) |  | -9.5   | %
|Other income (expense), net                                               |  |                          | 382       |   |                     |   | (326    | )       |  | 00.0  | %       |  | 00.0  | %            |  |   | 708     |   |  | 217.2  | %
|                                                                          |  |                          |           |   |                     |   |         |         |  |       |         |  |       |              |  |   |         |   |  |        |  
|INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND EQUITY EARNINGS |  |                          | 90,421    |   |                     |   | 85,279  |         |  | 08.0  | %       |  | 08.7  | %            |  |   | 5,142   |   |  | 6.0    | %
|Provision for income taxes                                                |  |                          | (34,825   | ) |                     |   | (34,137 | )       |  | 03.1  | %       |  | 03.5  | %            |  |   | (688    | ) |  | 2.0    | %
|Equity in earnings of unconsolidated subsidiary                           |  |                          |          |   |                     |   | 471     |         |  | 00.0  | %       |  | 00.0  | %            |  |   | (471    | ) |  | -100.0 | %
|Gain on disposal of equity method investment                              |  |                          |          |   |                     |   | 1,590   |         |  | 00.0  | %       |  | 00.2  | %            |  |   | (1,590  | ) |  | -100.0 | %
|                                                                          |  |                          |           |   |                     |   |         |         |  |       |         |  |       |              |  |   |         |   |  |        |  
|INCOME FROM CONTINUING OPERATIONS                                         |  |                          | 55,596    |   |                     |   | 53,203  |         |  | 04.9  | %       |  | 05.4  | %            |  |   | 2,393   |   |  | 4.5    | %
|Loss from discontinued operations, net of taxes                           |  |                          | (4,895    | ) |                     |   | (9,010  | )       |  | 00.4  | %       |  | 00.9  | %            |  |   | 4,115   |   |  | -45.7  | %
|                                                                          |  |                          |           |   |                     |   |         |         |  |       |         |  |       |              |  |   |         |   |  |        |  
|NET INCOME                                                                |  | $                        | 50,701    |   |                     | $ | 44,193  |         |  | 04.5  | %       |  | 04.5  | %            |  | $ | 6,508   |   |  | 14.7   | %
|                                                                          |  |                          |           |   |                     |   |         |         |  |       |         |  |       |              |  |   |         |   |  |        |  

Revenues

Revenues increased 16.0% to $1,137.2 million for the year ended December 31, 2006, compared to $980.3 million for the same period in 2005. This increase is primarily attributable to forward deployment and
countermine/counter IED support in Iraq and Afghanistan and increased work in the Intelligence Community. One contract in support of the installation and repair of systems designed to counter mines and improvised explosive devices (IEDs)
accounted for $102.4 million of revenues in 2006. Also contributing to the increase was a full year of revenue from our acquisition of Gray Hawk Systems, Inc. (Gray Hawk) on May 31, 2005. Gray Hawk accounted for $35.3 million of our
increase in revenue year over year.

Cost of services

Cost of services increased 17.2% to $944.2 million for the year ended December 31, 2006, compared to $805.9 million for the same period in 2005. As a percentage of revenues, cost of services increased 0.8%, to
83.0% for the year ended December 31, 2006 compared to 82.2% for the same period in 2005. This increase was due to larger purchases of equipment and materials directly for contracts and increased use of subcontractors in support of our
contracts. The increase in other direct costs resulted in lower income from continuing operations



34



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primarily due to generally lower profit margins on purchases of equipment and materials. Direct labor costs, which include applicable fringe benefits and
overhead, increased by 8.3% primarily due to the addition of Gray Hawk and the growth of our business. As a percentage of revenues, direct labor costs decreased 3.1% to 44.6% for the year ended December 31, 2006 compared to 47.7% for the same
period in 2005. Other direct costs increased by 28.9% over the same period in 2005, from $338.1 million to $437.4 million, which reflects the increase in purchases of equipment and materials, and increased use of subcontractors as noted above. As a
percentage of revenues, other direct costs increased from 34.5% for the year ended December, 2005 to 38.4% for the same period in 2006.

General and administrative

General and administrative expenses increased 13.4% to $102.4 million for the year ended
December 31, 2006, compared to $90.3 million for the same period in 2005. As a percentage of revenues, general and administrative expenses decreased to 9.0% from 9.2% for the year ended December 31, 2006 and 2005, respectively. The
increase in expense during the year resulted primarily from stock-based compensation expense related to the adoption of SFAS No. 123R, increased business development expenses, and increased expenses for our internal information technology
systems due to our growth and improvements. This increase was partially offset by a decrease in bid and proposal spending due to several large recompetitions on our contracts in 2005. Under SFAS No. 123R, share-based payments not fully vested
as of January 1, 2006 and those granted during the year ended December 31, 2006 are measured at estimated fair value and included as compensation expense over the periods services are provided. For the year ended December 31, 2006, we
recognized $5.7 million in compensation expense as a result of adopting SFAS No. 123R. Excluding the impact of SFAS No. 123R, general and administrative expense as a percentage of revenue was 8.5% for the year ended December 31, 2006.
The lower percentage reflects managements efforts to improve operating efficiency even though revenues increased by 16.0%.

Gain
on disposal of operations

On October 31, 2006, we sold assets related to
our NetWitness® business to the NetWitness Acquisition Corporation, an unrelated third party. We recorded a $1.0 million pre-tax gain in 2006 on the transaction. On February 11, 2005,
we sold our ManTech Environmental Technology, Inc. (METI) subsidiary to Alion Science and Technology Corporation. The sale generated a pre-tax gain of $3.7 million in 2005. For additional information see Gain on Disposal of Operations and
Equity Method Investment, below.

Interest expense

Interest expense decreased to $2.4 million for the year ended December 31, 2006, compared with $3.2 million for the same period in 2005. The decrease
in interest expense is a result of decreased borrowing under our credit facility in 2006. The relatively higher level of indebtedness in 2005 was due to our acquisition of Gray Hawk in May 2005. For the year ended December 31, 2006, we had an
average debt balance of $28.4 million compared to $54.7 million for the same period in 2005. As of December 31, 2006, we had no borrowings under our credit facility.

Interest Income

Interest income decreased slightly to $809 thousand for the year ended
December 31, 2006, compared with $894 thousand for the same period in 2005.



35



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Gain on disposal of equity method investment

In December 2005, we sold our 40 percent interest in Vosper-ManTech joint venture in the United Kingdom, which resulted in a $1.6 million pre-tax gain.
For additional information see Gain on Disposal of Operations and Equity Method Investment, below.

Loss from discontinued
operations

In February 2005, we reached the determination to sell our MSM subsidiary after we concluded that the MSM business no longer
furthered our long-term strategic objectives. Loss from discontinued operations decreased to $4.9 million for the year ended December 31, 2006, compared with $9.0 million for the same period in 2005. The loss in 2005 contained a loss accrual on
intangible assets, including goodwill, of $3.6 million, net of tax. The reduced loss in 2006 reflected increased revenues during 2006 with a lesser increase in associated direct costs. On February 23, 2007, we sold MSM to MSM Security Services
Holdings, LLC (an entity that is solely owned by George J. Pedersen, our Chairman and Chief Executive Officer) for $3.0 million in cash. For additional information see Discontinued Operations, below.

Net income

Net income increased
14.7% to $50.7 million for the year ended December 31, 2006, compared to $44.2 million for the same period in 2005. The increase is a result of higher revenue, increased income from continuing operations, and a reduced loss on discontinued
operations of $4.9 million in 2006 versus a loss of $9.0 million for the same period in 2005. Our effective tax rates for years ended December 31, 2006 and 2005 were 38.5% and 39.1%, respectively.

Backlog

For the years ended 2007, 2006 and 2005 our
backlog was $3.2 billion, $2.9 billion, and $2.3 billion, respectively, of which $758 million, $622 million, and $467 million, respectively, was funded backlog. Backlog represents estimates that we calculate on a consistent basis. At
December 31, 2007, SRS and MBI contributed approximately $670 million in backlog combined. We estimate that approximately 35% to 45% of our total backlog will be recognized as revenues prior to December 31, 2008.

Effects of Inflation

Inflation and uncertainties in
the macroeconomic environment, such as increases in fuel and other energy costs, and conditions in the mortgage backed securities market could also impact our labor rates beyond the predetermined escalation factors. However, we generally have
been able to price our contracts in a manner to accommodate the rates of inflation experienced in recent years. Under our time and materials contracts, labor rates are usually adjusted annually by predetermined escalation factors. Our cost
reimbursable contracts automatically adjust for changes in cost. Under our fixed-price contracts, we include a predetermined escalation factor, but generally, we have not been adversely affected by inflation. Purchases of equipments and materials
directly for contracts are usually cost reimbursable.

Liquidity and Capital Resources

Our primary liquidity needs are the financing of working capital, capital expenditures and acquisitions. Our primary source of liquidity is cash provided
by operations and our revolving credit facility. On April 30, 2007, we executed a New Credit Agreement with a syndicate of lenders led by Bank of America N.A., as administrative agent. The New Credit Agreement initially provides for up to
$300.0 million in available borrowings. See New Credit Agreement below for additional information. At December 31, 2007, we had $165.0 million outstanding under our credit facility and we were contingently liable under letters of
credit totaling $0.7 million, which reduces our ability to borrow under our credit facility. The maximum available borrowing under our credit facility at December 31, 2007 was $134.3 million. Generally, cash provided by operating activities is
adequate to fund our operations. Due to fluctuations in our cash flows and the growth in



36



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our operations, it is necessary from time to time to increase borrowings under our credit facility to meet cash demands. In the future, we may borrow greater
amounts in order to finance acquisitions or new contract start ups.

Cash flows from operating activities



|                                                                  |  |                         |        |   |      |   |        |      |  |   |       
|----------------------------------------------------------------- |  | ----------------------- | ------ | - | ---- | - | ------ | ---- |  | - | ------
|                                                                  |  | Year Ended December 31,
|(in thousands)                                                    |  | 2007                    |        |   | 2006 |   |        | 2005
|Net cash flow from operating activities of continuing operations: |  | $                       | 64,886 |   |      | $ | 90,873 |      |  | $ | 47,335
|Net cash flow from discontinued operations:                       |  |                         | (1,562 | ) |      |   | (6,517 | )    |  |   | 14,151
|                                                                  |  |                         |        |   |      |   |        |      |  |   |       
|Net cash flow from operating activities:                          |  | $                       | 63,324 |   |      | $ | 84,356 |      |  | $ | 61,486
|                                                                  |  |                         |        |   |      |   |        |      |  |   |       

Our operating cash flow is primarily affected by the overall profitability of our contracts, our
ability to invoice and collect from our clients in a timely manner, and our ability to manage our vendor payments. We bill most of our clients and prime contractors monthly after services are rendered. The reduced cash inflow from operations in 2007
as compared to 2006 was the result of a significant collection of receivables in 2006 under a management collection initiative. The improved cash inflow from continuing operations in 2007 when compared to 2005 was primarily from the increased income
from continuing operations from the continued growth of our business. In addition, net cash flows from operating activities was impacted by the adoption of SFAS No. 123R in 2006, which required the reclassification of excess tax benefits from
the exercise of stock options from operating cash flows to financing cash flows. The reduced cash outflow from discontinued operations in 2007 compared to 2006, is due to the sale of MSM on February 23, 2007. The positive cash flow in
discontinued operations for 2005 was due to the collection of all outstanding receivables on our Defense Security Services contract within our MSM subsidiary.

Cash flows from investing activities



|                                                      |  |                         |          |   |      |   |         |      |  |   |          |  
|----------------------------------------------------- |  | ----------------------- | -------- | - | ---- | - | ------- | ---- |  | - | -------- | -
|                                                      |  | Year Ended December 31, |         
|(in thousands)                                        |  | 2007                    |          |   | 2006 |   |         | 2005 | 
|Net investing cash flow from continuing operations:   |  | $                       | (278,286 | ) |      | $ | (25,244 | )    |  | $ | (105,257 | )
|Net investing cash flow from discontinued operations: |  |                         | 3,000    |   |      |   | (465    | )    |  |   | (360     | )
|                                                      |  |                         |          |   |      |   |         |      |  |   |          |  
|Net cash flow from investing activities:              |  | $                       | (275,286 | ) |      | $ | (25,709 | )    |  | $ | (105,617 | )
|                                                      |  |                         |          |   |      |   |         |      |  |   |          |  

Our cash flow used in investing activities
consists primarily of capital expenditures and business acquisitions offset by disposals of operations. Cash outflows in 2007 were primarily from our acquisition of SRS on May 7, 2007 for $197.0 million, net of cash acquired, our acquisition of
MBI on December 18, 2007 for $78.7 million, net of cash acquired, and purchases of equipment and software for internal use. These were partially offset by the sale of office buildings and land for $1.8 million that we acquired in 2005. We had a
cash inflow from discontinued operations of $3.0 million due to the sale of our MSM subsidiary. For more information see Discontinued Operations, below. Investing activities in 2006 include the acquisition of GRS Solutions, Inc for $19.8
million, net of cash acquired, purchases of equipment and software of $7.4 million offset by the sale of our NetWitness® operation for $2.0 million. Investing activities in 2005 included
the acquisition of Gray Hawk for $101.2 million, net of cash acquired, and a $5.6 million final earn out payment related to the IDS acquisition offset by the disposal of METI for $7.0 million and sale of our 40% interest in the Vosper-ManTech joint
venture for $1.7 million. Purchases of property, equipment and software totaled $7.1 million which included $2.0 million purchase of office buildings and land. Cash flow from investing activities could fluctuate significantly in the future with the
execution of our acquisition strategy.

Cash flows from financing activities



|                                         |  |                         |         |      |   |         |      |  |   |       
|---------------------------------------- |  | ----------------------- | ------- | ---- | - | ------- | ---- |  | - | ------
|                                         |  | Year Ended December 31,
|(in thousands)                           |  | 2007                    |         | 2006 |   |         | 2005
|Net cash flow from financing activities: |  | $                       | 178,500 |      | $ | (22,815 | )    |  | $ | 26,846
|                                         |  |                         |         |      |   |         |      |  |   |       



37



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Cash provided by financing activities in 2007 resulted primarily from the use of our credit facility to
support the acquisitions of SRS and MBI, and proceeds from the exercise of stock options. In addition, we acquired treasury stock with a cost of $9.1 million related to the distribution of a supplemental executive retirement plan (GJP SERP) for our
Chairman and Chief Executive Officer (for additional information see Note 10 Stockholders Equity and Stock Options in our consolidated financial statements). The cash outflow for the acquisition of treasury stock was offset by the excess tax
benefits generated by stock option exercises and the GJP SERP transaction. The net cash used in 2006 resulted primarily from paying down our line of credit with cash provided from operations, $42.4 million, offset by cash inflows from the exercise
of stock options of $16.8 million and the impact of SFAS No. 123R. SFAS 123R requires that excess tax benefits be shown as a cash inflow from financing activities. Cash provided from financing in 2005 was the result of stock option exercises of
$9.5 million and a net increase in borrowings on our credit facility to finance our acquisition of Gray Hawk in May 2005.

Cash from
financing activities is driven primarily from the proceeds on the exercise of stock options and their associated excess tax benefits as well as our use of our credit facility to fund operations and/or acquisitions. In the second quarter of 2007, we
refinanced our credit facility to support the acquisition of SRS and future liquidity requirements.

New Credit Agreement

On April 30, 2007, we terminated our $125.0 million credit facility with a syndicate of lenders led by Citizens Bank of
Pennsylvania, as administrative agent, and executed the New Credit Agreement with a syndicate of lenders led by Bank of America, N.A, as administrative agent. The New Credit Agreement provides for a $300.0 million revolving credit facility, with a
$25.0 million letter of credit sublimit and a $30.0 million swing line loan sublimit. The New Credit Agreement also contains an accordion feature that permits the Company to arrange with the lenders for them to provide up to $100.0 million in
additional commitments.

Borrowings under the New Credit Agreement are collateralized by our assets and bear interest at one of the
following rates as selected by the Company: a LIBOR-based rate plus market-rate spreads that are determined based on a company leverage ratio calculation (0.875% to 1.5%), or the lenders base rate, which is the lower of the Federal Funds Rate
plus 0.5% or Bank of Americas prime lending rate. The maturity date for the New Credit Agreement is April 30, 2012.

The terms
of the Credit Agreement permit prepayment and termination of the loan commitments at any time, subject to certain conditions. The New Credit Agreement requires the Company to comply with specified financial covenants, including the maintenance of a
certain leverage ratio and fixed charge coverage ratio. The New Credit Agreement also contains various covenants, including affirmative covenants with respect to certain reporting requirements and maintaining certain business activities, and
negative covenants that, among other things, may limit our ability to incur liens, incur additional indebtedness, make investments, make acquisitions, and undertake certain additional actions.

We believe the capital resources available to us under our credit agreements and cash from our operations are adequate to fund our ongoing operations and
to support the internal growth we expect to achieve for at least the next 12 months. We anticipate financing our external growth from acquisitions and our longer-term internal growth through one or more of the following sources: cash from
operations; additional borrowing; issuance of equity; use of the existing revolving facility; or a refinancing of our credit facilities. At December 31, 2007, we had $165.0 million outstanding under our credit facility.

Off-Balance Sheet Arrangements

Effective
June 20, 2003, our lenders issued two letters of credit to Fianzas Guardiana Inbursa, S.A. (FGI) on behalf of GSE Systems, Inc. (GSE). As discussed in Note 14 to our consolidated financial statements in Item 8, prior to the sale of these
investments on October 21, 2003, we held common and preferred stock in GSE and accounted for this investment using the equity method.



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The first letter of credit, which was cancelled in March 2005, was in support of an advance payment bond
of approximately $1.8 million, issued by FGI to a customer of GSEs power business and had a term of 30 months. The second letter of credit, which was cancelled in August 2006, was in support of a performance bond of approximately $1.3 million
issued by FGI to the same customer.

In exchange for issuing the letters of credit, we received 100,000 warrants to purchase GSEs
common stock at the market price of GSEs common stock as of the close of business on July 8, 2003, as well as a 7% annual fee, paid on a quarterly basis, calculated on the total amount of the then-existing value of the letters of credit.
In 2006, an unrealized gain on the increase in fair value of the warrants of $0.5 million was recorded in our consolidated statement of income. During 2007, we exercised all 100,000 warrants held in GSE at a price $1.33 per share. Additionally, we
sold the converted shares at $6.00 per share. The transactions resulted in an insignificant loss in the period due to the change in fair value of the warrants and subsequent sale of the converted securities.

During 2007, George J. Pedersen, our Chairman of the Board and Chief Executive Officer, beneficially owned shares and options of GSE stock representing
less than 5% of GSE. In 2007, Mr. Pedersen served on GSEs board of directors and compensation committee.

Contractual Obligations

The following table is in thousands:



|                                        |  |                        |         |                 |   |          |  |          |        |                  |   |        |  |   |       
|--------------------------------------- |  | ---------------------- | ------- | --------------- | - | -------- |  | -------- | ------ | ---------------- | - | ------ |  | - | ------
|                                        |  | Payments Due By Period
|Contractual Obligations                 |  | Total                  |         | Less than1 Year |   | 1-3Years |  | 3-5Years |        | More than5 Years
|Debt obligations (1)                    |  | $                      | 165,000 |                 | $ | 126,000  |  | $        | 39,000 |                  | $ |       |  | $ |      
|Operating lease obligations (2)         |  |                        | 96,931  |                 |   | 22,305   |  |          | 36,058 |                  |   | 25,918 |  |   | 12,650
|Other long-term liabilities (3)         |  |                        | 7,848   |                 |   |         |  |          | 4,851  |                  |   | 1,734  |  |   | 1,263 
|Accrued defined benefit obligations (4) |  |                        | 1,859   |                 |   | 186      |  |          | 347    |                  |   | 306    |  |   | 1,020 
|                                        |  |                        |         |                 |   |          |  |          |        |                  |   |        |  |   |       
|Total                                   |  | $                      | 271,638 |                 | $ | 148,491  |  | $        | 80,256 |                  | $ | 27,958 |  | $ | 14,933
|                                        |  |                        |         |                 |   |          |  |          |        |                  |   |        |  |   |       



|(1) | See Note 8 to our consolidated financial statements in Item 8 for additional information regarding debt and related matters. The amounts in the table above represents the
periods in which we estimate the debt obligation to be repaid. However, the borrowings are due on the maturity date of the credit agreement, April 30, 2012.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | Operating lease obligations have been reduced for the related amount disclosed in Other Long-term Liabilities as deferred rent (see below). See Note 9 to our consolidated financial
statements in Item 8 for additional information regarding operating leases.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(3) | Other Long-term Liabilities at December 31, 2007 included approximately $5.5 million of deferred rent liabilities resulting from recording rent expenses on a straight-line
basis over the life of the respective lease in accordance with Statement of Financial Accounting Standards (SFAS) No. 13, Accounting for Leases, and FASB Technical Bulletin No. 85-3, Accounting for Operating Leases with Scheduled Rent
Increases. Also included in other long-term liabilities is a gross unrecognized tax benefit liability of $1.8 million resulting from the adoption of Interpretation No. 48 (FIN 48), Accounting for Uncertainty in Income Taxes-An
Interpretation of FASB Statement No. 109 in January 2007.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(4) | Accrued defined benefit obligation includes approximately $1.9 million of unfunded pension obligations related to nonqualified supplemental defined benefit pension
plans for certain retired employees of an acquired company. The amounts above are subject to change based on actuarial as well as the vital status of participants. This obligation is included in the Accrued Retirement amount on our consolidated
balance sheet. In addition, the Accrued Retirement amount on our consolidated balance sheet includes amounts for
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



39



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| | two non-qualified deferred compensation plans for certain key employees. The funds deferred by the employees are invested and these investment assets are
maintained in rabbi trusts. The rabbi trusts assets are reflected in the Employee Supplemental Savings Plan Assets on our consolidated balance sheet. Because these liabilities will be satisfied by assets held in rabbi trusts, the amounts have
been excluded from the above table.
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Gain on Disposal of Operations and Equity Method Investment

On October 31, 2006, we sold assets related to our NetWitness® operation to NetWitness Acquisition Corporation, an unrelated third party, for $2.0 million in cash and an equity stake in the new company of less than 5%. The sale of NetWitness® included $1.0 million in goodwill and a fully amortized intangible asset with a cost basis of $0.4 million. We recorded a pre-tax gain of approximately $1.0 million on the transaction. We continue to provide
NetWitness® product and services to various federal government agencies through subcontracts with NetWitness Acquisition Corporation.

On February 11, 2005, we sold our METI subsidiary to another company, Alion Science and Technology Corporation. METI performs research and
development in the fields of environmental and life sciences for the Environmental Protection Agency, the National Cancer Institute, the U.S. Air Force, and other federal government agencies. The financial terms of the arrangement included an all
cash payment of $7.0 million, which resulted in a pre-tax gain of approximately $3.7 million net of selling cost in 2005. Although we have sold METI, we continue to provide professional services in the environmental area for various federal
government agencies.

In December 2005, we sold our 40 percent interest in our Vosper-ManTech joint venture in the United Kingdom to Vosper
Thornycroft Limited for approximately $4.3 million including accrued dividends. The sale resulted in a $1.6 million pre-tax gain recorded in gain on disposal of equity method investment.

Discontinued Operations

In February 2005, we reached a final corporate determination to exit the
personnel security investigation services business and discontinue operations at our MSM subsidiary. We reached the determination to sell our MSM subsidiary after we concluded that the MSM business no longer furthered our long-term strategic
objectives. At December 31, 2005, we recorded a loss accrual of $3.6 million on the valuation of these assets based on offers received from potential buyers in early 2006. The loss accrual reflects the write-off of intangible assets
including goodwill, net of taxes. The loss also reflects a valuation allowance of $1.3 million for deferred state income tax assets related to net operating losses carried forward, which are not expected to be realized.

On February 23, 2007, we sold MSM to MSM Security Services Holdings, LLC for $3.0 million in cash. The sale resulted in a pre-tax gain of $0.6
million in the first quarter of 2007. MSM Security Services Holdings, LLC is solely owned by George J. Pedersen, ManTechs Chairman and Chief Executive Officer. Mr. Pedersen presented an offer to the ManTech Board of Directors to purchase
our MSM subsidiary. Mr. Pedersens offer exceeded the value of any other definitive offers extended to the Company.

After
Mr. Pedersen presented a formal offer to the Company to purchase our MSM subsidiary, the Board formed a special committee comprised solely of independent directors to review, evaluate and determine the advisability of the transaction. The
special committee retained the services of independent legal counsel and independent financial advisor to advise the special committee and assist it in connection with its duties. The special committee received a fairness opinion from the
independent financial advisor. The special committee of the Board considered the opinions received from its advisors and unanimously recommended approval of the transaction to the independent members of the board, and the transaction was approved by
ManTechs independent directors.



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Our Consolidated Financial Statements and related note disclosures reflect our ManTech MSM Security
Services, Inc. subsidiary as Long-Lived Assets to Be Disposed of by Sale for all periods presented in accordance with Statement of Financial Accounting Standards No. 144Accounting for the Impairment or Disposal
of Long-Lived Assets. As such, MSM was classified as held for sale in the consolidated balance sheets and discontinued operations, net of applicable income taxes in the consolidated statements of income.

Critical Accounting Estimates and Policies

Critical
accounting policies are defined as those that are reflective of significant judgments and uncertainties, and potentially result in materially different results under different assumptions and conditions. Application of these policies is particularly
important to the portrayal of our financial condition and results of operations. The discussion and analysis of our financial condition and results of operations are based on our consolidated financial statements, which have been prepared in
accordance with accounting principles generally accepted in the United States of America. The preparation of these consolidated financial statements requires management to make estimates and judgments that affect the reported amount of assets,
liabilities, revenues and expenses. Actual results may differ from these estimates under different assumptions or conditions. Our significant accounting policies, including the critical policies listed below, are more fully described in the notes to
the consolidated financial statements included in this report.

Revenue Recognition and Cost Estimation

We recognize revenue when persuasive evidence of an arrangement exists, services have been rendered, the contract price is fixed or determinable, and
collectability is reasonably assured. We have a standard internal process that we use to determine whether all required criteria for revenue recognition have been met.

Our revenues consist primarily of services provided by our employees and the pass through of costs for materials and subcontract efforts under contracts with our customers. Cost of services consists primarily of
compensation expenses for program personnel, the fringe benefits associated with this compensation, and other direct expenses incurred to complete programs, including cost of materials and subcontract efforts.

We derive the majority of our revenue from cost-plus-fixed-fee, cost-plus-award-fee, firm-fixed-price, or time-and-materials contracts. Revenues for
cost-reimbursement contracts are recorded as reimbursable costs are incurred, including an estimated share of the applicable contractual fees earned. For performance-based fees under cost reimbursable contracts, that are subject to the provisions of
American Institute of Certified Public Accountants (AICPA) Statement of Position (SOP) No. 81-1, Accounting for Performance of Construction-Type and Certain Production-Type Contracts(SOP 81-1), we recognize the
relevant portion of the expected fee to be awarded by the client at the time such fee can be reasonably estimated, based on factors such as our prior award experience and communications with the client regarding performance. For cost reimbursable
contracts with performance-based fee incentives that are subject to the provisions of U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 104, Revenue Recognition (SAB 104), we recognize the relevant portion of the fee
upon customer approval. For time-and-material contracts, revenue is recognized to the extent of billable rates times hours delivered plus material and other reimbursable costs incurred. For long-term fixed-price production contracts, revenue is
recognized at a rate per unit as the units are delivered, or by other methods to measure services provided. Revenue from other long-term fixed-price contracts is recognized ratably over the contract period or by other appropriate methods to measure
services provided. Contract costs are expensed as incurred except for certain limited long-term contracts noted below. For long-term contracts which are specifically described in the scope section of SOP 81-1, Accounting for Performance
of Construction Type and Certain Production-Type Contracts, or other appropriate accounting literature we apply the percentage of completion method. Under the percentage of completion method, income is recognized at a consistent profit margin
over the period of performance based on estimated profit margins at completion of the contract. This method of accounting requires estimating the total revenues and total contract cost at completion of the contract. During the performance of
long-term contracts, these estimates are periodically reviewed and revisions are made



41



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as required. The impact on revenue and contract profit as a result of these revisions is included in the periods in which the revisions are made. This method
can result in the deferral of costs or the deferral of profit on these contracts. Because we assume the risk of performing a fixed-price contract at a set price, the failure to accurately estimate ultimate costs or to control costs during
performance of the work could result, and in some instances has resulted, in reduced profits or losses for such contracts. Estimated losses on contracts at completion are recognized when identified. In certain circumstances, revenues are recognized
when contract amendments have not been finalized.

Accounting for Business Combinations and Goodwill

The purchase price of an acquired business is allocated to the tangible assets, financial assets and separately recognized intangible assets acquired less
liabilities assumed based upon their respective fair values, with the excess recorded as goodwill. Such fair value assessments require judgments and estimates that can be affected by contract performance and other factors over time, which may cause
final amounts to differ materially from original estimates.

Effective January 1, 2002, we adopted SFAS No. 142, and no longer
amortize goodwill; rather, we review goodwill at least annually for impairment. We have elected to perform this review annually during the second quarter of each calendar year and no adjustments were necessary for our continuing operations.

Due to the many variables inherent in the estimation of a reporting units fair value and the relative size of the companys
recorded goodwill, differences in assumptions may have a material effect on the results of the companys impairment analysis.

As
noted above in our discussion of Discontinued Operations we recorded a loss accrual for the impairment of goodwill related to MSM at December 31, 2005.

Recent Accounting Pronouncements

In September 2006, the FASB issued SFAS No. 158,
Employers Accounting for Defined Benefit Pension and Other Postretirement Plans, an amendment of FASB Statements No. 87, 88, 106 and 132(R). SFAS 158, which represents the completion of the first phase in the
FASBs postretirement benefits accounting project, applies to all plan sponsors who offer defined postretirement benefit plans and requires an entity to:



| |  |  | Recognize in its balance sheet an asset for a defined benefit postretirement plans over-funded status or a liability for a plans under-funded status.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Measure a defined benefit postretirement plans assets and obligations that determine its funded status as of the end of the employers fiscal year.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Recognize changes in the funded status of a defined benefit postretirement plan in comprehensive earnings in the year in which the changes occur.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------

SFAS 158 does not change the amount of net periodic benefit
cost included in net earnings. The requirement to recognize the funded status of a defined benefit postretirement plan and the disclosure requirements are effective for fiscal years ending after December 15, 2006 for public entities.
Accordingly, we made adjustments to initially adopt SFAS 158 in the fourth quarter of 2006. The requirement to measure plan assets and benefit obligations as of the date of the employers fiscal year end balance sheet is effective for
fiscal years ending after December 15, 2008. Our defined benefit pension plans have a fiscal year end of December 31stand therefore the
measurement date provisions of the standard were not applicable.

In June 2006, the FASB issued Interpretation No. 48 (FIN 48),
Accounting for Uncertainty in Income TaxesAn interpretation of FASB Statement No. 109, which clarifies the accounting for uncertainty in tax positions. FIN 48 seeks to reduce the diversity in accounting practices used
in regards to uncertain tax positions



42



---

by prescribing a recognition threshold and measurement criteria for benefits related to income taxes. The provisions of FIN 48 are effective for all
reporting periods beginning after December 15, 2006. Effective January 1, 2007, we adopted FIN 48 to all tax positions and recorded a $125 thousand cumulative effect adjustment to retained earnings. See Item 8 footnote 12 for further
discussion on the adoption of FIN 48.

In September 2006, the FASB issued Statement No. 157 (SFAS 157), Fair Value
Measurements, which defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. SFAS 157 applies to other accounting pronouncements that require or permit fair value
measurements, but does not require any new fair value measurements. A fair value hierarchy was established to classify the inputs used in measuring fair value. Disclosure requirements require disclosure of the level in the fair value hierarchy in
which the fair value measurements in their entirety fall. On October 17, 2007, the FASB deferred the effective date for nonfinancial assets and liabilities to fiscal years beginning after November 15, 2008. For fiscal years beginning after
November 15, 2007, the Company will be required to implement SFAS 157 for financial assets and liabilities, as well as for any other assets and liabilities that are carried at fair value on a recurring basis in the financial statements. The
Company does not expect the adoption of SFAS 157 for financial assets and liabilities will have a material impact on its consolidated financial statements. At this time we are assessing the impact the adoption of SFAS 157 for nonfinancial assets and
liabilities will have on our consolidated financial statements.

In February 2007, the FASB issued Statement No. 159 (SFAS 159),
The Fair Value Option for Financial Assets and LiabilitiesIncluding an amendment of FASB Statement No. 115, which permits entities to measure eligible items at fair value. For items where the fair value
election is made, the company will be required to report unrealized gains or losses in earnings. SFAS 159 is effective for fiscal years beginning after November 15, 2007. We do not expect the adoption of SFAS 159 to have a material impact on
our consolidated financial statements.

In December 2007, the FASB issued SFAS No. 141 (revised 2007), Business
Combinations, (SFAS 141R). The new standard moves closer to a fair value model by requiring the acquirer to measure all assets acquired and all liabilities assumed at their respective fair values at the date of acquisition,
including the measurement of noncontrolling interests at fair value. The Statement also establishes principles and requirements as to how the acquirer recognizes and measures goodwill acquired in a business combination or a gain from a bargain
purchase and determines what information to disclose to enable users of the financial statements to evaluate the nature and financial effects of the business combination. In addition, SFAS 141R significantly changes the accounting for business
combinations in a number of areas, including the treatment of contingent consideration, preacquisition contingencies, in-process research and development, restructuring costs, and requires the expensing of acquisition-related costs as incurred.

The effective date of SFAS 141R is for fiscal years beginning after December 15, 2008. For transactions consummated after the
effective date of SFAS 141R, prospective application of the new standard is applied. For business combinations consummated prior to the effective date of SFAS 141R, the guidance in SFAS 141 is applied.

In December 2007, the FASB issued SFAS No. 160, Noncontrolling Interests in Consolidated Financial Statements, which amends
Accounting Research Bulletin No. 51 and provides accounting and reporting standards for the noncontrolling interest in a subsidiary, commonly referred to as minority interest, and for the deconsolidation of a subsidiary. The new standard
requires noncontrolling interests to be presented separately within equity in the consolidated statement of financial position. Consolidated net income attributable to the parent and noncontrolling interests will be clearly identified and presented
on the face of the statement of operations. When a change in control of a subsidiary occurs it will either be accounted for as an equity transaction, when control is maintained, or a gain or loss will be recognized when control is not maintained.
The remaining noncontrolling interest will be remeasured to fair value when control is lost. SFAS 160 requires that the noncontrolling interest continue to be attributed its share of losses and thus is no longer limited to the original carrying
amount of the noncontrolling interest. This may result in a negative carrying balance.



43



---

The effective date of SFAS 160 is for fiscal years beginning after December 15, 2008. The Statement
will be applied prospectively as of the beginning of the year in which the Statement is adopted except for presentation and disclosure requirements which will be applied retrospectively for all periods presented. We do not expect the adoption of
SFAS 160 to have a material impact on our consolidated financial statements.

In March 2007, the FASB Emerging Issues Task Force ratified
Issue 06-10 (EITF 06-10),Accounting for Deferred Compensation and Postretirement Benefit Aspects of Collateral Assignment Split-Dollar Life Insurance Arrangements, which clarifies the treatment of split
dollar life insurance arrangements in regards to SFAS 106 and APB 12. An employer should recognize a liability for future benefits in accordance with SFAS 106 (if, in substance, a postretirement benefit plan exists) or Opinion 12 (if the arrangement
is, in substance, an individual deferred compensation contract) based on the substantive agreement with the employee.

EITF 06-10 is
effective for fiscal years beginning after December 15, 2007. We do not expect the adoption of EITF 06-10 to have a significant impact on our consolidated financial statements or effective tax rate.

Item 7A.Quantitative and Qualitative Disclosures about Market Risk

Our exposure to market risk relates to changes in interest rates for borrowings under our revolving credit facility. At December 31, 2007, we had
$165.0 million outstanding on our revolving credit facility. Borrowings under our revolving credit facility bear interest at variable rates. A hypothetical 10% increase in interest rates would have increased our annual interest expense for the year
ended December 31, 2007 by less than $0.4 million.

We do not use derivative financial instruments for speculative or trading
purposes. We invest our excess cash in short-term, investment grade, interest-bearing securities. Our investments are made in accordance with an investment policy. Under this policy, no investment securities can have maturities exceeding six months
and the weighted average maturity of the portfolio cannot exceed 60 days.



44



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Item 8.Financial Statements and Supplementary Data



|                                                                                                                                  |  |        
|--------------------------------------------------------------------------------------------------------------------------------- |  | -------
|Index to Consolidated Financial Statements                                                                                        |  | Page(s)
|Report of Independent Registered Public Accounting Firm on the Consolidated Financial Statements and Financial Statement Schedule |  | 46     
|Consolidated Balance Sheets as of December 31, 2007 and 2006                                                                      |  | 47     
|Consolidated Statements of Income for the years ended December 31, 2007, 2006 and 2005                                            |  | 48     
|Consolidated Statements of Comprehensive Income for the years ended December 31, 2007, 2006 and 2005                              |  | 49     
|Consolidated Statements of Changes in Stockholders Equity for the years ended December 31, 2007, 2006 and 2005                   |  | 50     
|Consolidated Statements of Cash Flows for the years ended December 31, 2007, 2006 and 2005                                        |  | 51-52  
|Notes to Consolidated Financial Statements                                                                                        |  | 53-82  



45



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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

ON THE CONSOLIDATED FINANCIAL STATEMENTS AND
FINANCIAL

STATEMENT SCHEDULE

To
the Board of Directors and Stockholders of ManTech International Corporation

Fairfax, Virginia

We have audited the accompanying consolidated balance sheets of ManTech International Corporation and subsidiaries (the Company) as of December 31, 2007
and 2006, and the related consolidated statements of income, comprehensive income, changes in stockholders equity, and cash flows for each of the three years in the period ended December 31, 2007. Our audits also included the
financial statement schedule listed in the Index at Item 15. These financial statements and financial statement schedule are the responsibility of the Companys management. Our responsibility is to express an opinion on the
financial statements and financial statement schedules based on our audits.

We conducted our audits in accordance with the standards of the Public Company
Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on
a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements
present fairly, in all material respects, the financial position of ManTech International Corporation and subsidiaries as of December 31, 2007 and 2006, and the results of their operations and their cash flows for each of the three years in the
period ended December 31, 2007, in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, such financial statement schedule, when considered in relation to the basic consolidated
financial statements taken as a whole, present fairly, in all material respects, the information set forth therein.

As discussed in Note 12 to the
consolidated financial statements, the Company adopted, effective January 1, 2007, a new accounting standard for accounting for uncertain tax positions. As discussed in Note 10 to the consolidated financial statements, effective January 1,
2006, the Company changed its method of accounting for stock-based compensation to conform to FASB Statement No. 123(R), Share-Based Payment.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Companys internal control over financial reporting as of December 31, 2007, based on the criteria
established in Internal ControlIntegrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated March 17, 2008 expressed an unqualified opinion on the Companys internal
control over financial reporting.

/s/ DELOITTE & TOUCHE LLP

McLean, Virginia

March 17, 2008



46



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MANTECH INTERNATIONAL CORPORATION

CONSOLIDATED BALANCE SHEETS

(Dollars in Thousands, Except Per Share Amounts)



|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------ | ------- | - | ---- | - | ------- | -
|                                                                                                                                                                                                                        |  | December 31, |        
|                                                                                                                                                                                                                        |  | 2007         |         |   | 2006 |  
|ASSETS                                                                                                                                                                                                                  |  |              |         |   |      |   |         |  
|CURRENT ASSETS :                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|Cash and cash equivalents                                                                                                                                                                                               |  | $            | 8,048   |   |      | $ | 41,510  |  
|Receivablesnet                                                                                                                                                                                                         |  |              | 337,467 |   |      |   | 236,445 |  
|Prepaid expenses and other                                                                                                                                                                                              |  |              | 19,104  |   |      |   | 13,581  |  
|Assets of operations held for sale                                                                                                                                                                                      |  |              |        |   |      |   | 3,373   |  
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|Total Current Assets                                                                                                                                                                                                    |  |              | 364,619 |   |      |   | 294,909 |  
|Property and equipmentnet                                                                                                                                                                                              |  |              | 14,170  |   |      |   | 13,881  |  
|Goodwill                                                                                                                                                                                                                |  |              | 451,832 |   |      |   | 238,322 |  
|Other intangiblesnet                                                                                                                                                                                                   |  |              | 82,976  |   |      |   | 40,180  |  
|Employee supplemental savings plan assets                                                                                                                                                                               |  |              | 17,999  |   |      |   | 15,427  |  
|Other assets                                                                                                                                                                                                            |  |              | 5,907   |   |      |   | 10,533  |  
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|TOTAL ASSETS                                                                                                                                                                                                            |  | $            | 937,503 |   |      | $ | 613,252 |  
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|                                                                                                                                                                                                                        |  |             
|LIABILITIES AND STOCKHOLDERS EQUITY                                                                                                                                                                                    |  |              |         |   |      |   |         |  
|CURRENT LIABILITIES :                                                                                                                                                                                                   |  |              |         |   |      |   |         |  
|Current portion of debt                                                                                                                                                                                                 |  | $            | 126,000 |   |      | $ |        |  
|Accounts payable and accrued expenses                                                                                                                                                                                   |  |              | 100,447 |   |      |   | 72,125  |  
|Accrued salaries and related expenses                                                                                                                                                                                   |  |              | 61,429  |   |      |   | 47,356  |  
|Deferred income taxescurrent                                                                                                                                                                                           |  |              |        |   |      |   | 140     |  
|Billings in excess of revenue earned                                                                                                                                                                                    |  |              | 8,334   |   |      |   | 5,284   |  
|Liabilities of operations held for sale                                                                                                                                                                                 |  |              |        |   |      |   | 1,815   |  
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|Total Current Liabilities                                                                                                                                                                                               |  |              | 296,210 |   |      |   | 126,720 |  
|Debtnet of current portion                                                                                                                                                                                             |  |              | 39,000  |   |      |   |        |  
|Accrued retirement                                                                                                                                                                                                      |  |              | 18,973  |   |      |   | 16,750  |  
|Other long-term liabilities                                                                                                                                                                                             |  |              | 7,848   |   |      |   | 3,302   |  
|Deferred income taxesnon-current                                                                                                                                                                                       |  |              | 24,167  |   |      |   | 7,464   |  
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|TOTAL LIABILITIES                                                                                                                                                                                                       |  |              | 386,198 |   |      |   | 154,236 |  
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|COMMITMENTS AND CONTINGENCIES                                                                                                                                                                                           |  |              |        |   |      |   |        |  
|                                                                                                                                                                                                                        |  |             
|STOCKHOLDERS EQUITY:                                                                                                                                                                                                   |  |              |         |   |      |   |         |  
|Common stock, Class A$0.01 par value; 150,000,000 shares authorized; 20,474,379 and 19,020,181 shares issued at December 31, 2007
and 2006; 20,231,339 and 19,020,181 shares outstanding at December 31, 2007 and 2006 |  |              | 205     |   |      |   | 190     |  
|Common stock, Class B$0.01 par value; 50,000,000 shares authorized; 14,279,813 and 15,032,293 shares issued and outstanding at
December 31, 2007 and 2006                                                              |  |              | 143     |   |      |   | 150     |  
|Additional paid-in capital                                                                                                                                                                                              |  |              | 297,827 |   |      |   | 263,409 |  
|Treasury stock, 243,040 shares at cost at December 31, 2007                                                                                                                                                             |  |              | (9,114  | ) |      |   |        |  
|Retained earnings                                                                                                                                                                                                       |  |              | 262,686 |   |      |   | 195,604 |  
|Accumulated other comprehensive loss                                                                                                                                                                                    |  |              | (147    | ) |      |   | (120    | )
|Unearned ESOP shares                                                                                                                                                                                                    |  |              | (295    | ) |      |   | (217    | )
|Deferred compensation                                                                                                                                                                                                   |  |              |        |   |      |   | 640     |  
|Shares held in grantor trust                                                                                                                                                                                            |  |              |        |   |      |   | (640    | )
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|TOTAL STOCKHOLDERS EQUITY                                                                                                                                                                                              |  |              | 551,305 |   |      |   | 459,016 |  
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  
|TOTAL LIABILITIES AND STOCKHOLDERS EQUITY                                                                                                                                                                              |  | $            | 937,503 |   |      | $ | 613,252 |  
|                                                                                                                                                                                                                        |  |              |         |   |      |   |         |  

See notes to consolidated financial statements.



47



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MANTECH INTERNATIONAL CORPORATION

CONSOLIDATED STATEMENTS OF INCOME

(In Thousands Except Per Share Amounts)



|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|------------------------------------------------------------------------- |  | ----------------------- | --------- | - | ---- | - | --------- | ---- |  | - | ------- | -
|                                                                          |  | Year Ended December 31, |          
|                                                                          |  | 2007                    |           |   | 2006 |   |           | 2005 | 
|REVENUES                                                                  |  | $                       | 1,448,098 |   |      | $ | 1,137,178 |      |  | $ | 980,289 |  
|Cost of services                                                          |  |                         | 1,214,150 |   |      |   | 944,150   |      |  |   | 805,853 |  
|General and administrative expenses                                       |  |                         | 120,244   |   |      |   | 102,378   |      |  |   | 90,258  |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|OPERATING INCOME                                                          |  |                         | 113,704   |   |      |   | 90,650    |      |  |   | 84,178  |  
|Gain on disposal of operations                                            |  |                         |          |   |      |   | 955       |      |  |   | 3,698   |  
|Interest expense                                                          |  |                         | (5,103    | ) |      |   | (2,375    | )    |  |   | (3,165  | )
|Interest income                                                           |  |                         | 1,261     |   |      |   | 809       |      |  |   | 894     |  
|Other income (expense), net                                               |  |                         | 263       |   |      |   | 382       |      |  |   | (326    | )
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND EQUITY EARNINGS |  |                         | 110,125   |   |      |   | 90,421    |      |  |   | 85,279  |  
|Provision for income taxes                                                |  |                         | (42,798   | ) |      |   | (34,825   | )    |  |   | (34,137 | )
|Equity in earnings of unconsolidated subsidiaries                         |  |                         |          |   |      |   |          |      |  |   | 471     |  
|Gain on disposal of equity method investment                              |  |                         |          |   |      |   |          |      |  |   | 1,590   |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|INCOME FROM CONTINUING OPERATIONS                                         |  |                         | 67,327    |   |      |   | 55,596    |      |  |   | 53,203  |  
|(Loss) from operations of discontinued component, net of taxes            |  |                         | (458      | ) |      |   | (4,895    | )    |  |   | (9,010  | )
|Gain on sale of discontinued operation, net of taxes (sold to CEO)        |  |                         | 338       |   |      |   |          |      |  |   |        |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|(Loss) from discontinued operations, net of taxes                         |  |                         | (120      | ) |      |   | (4,895    | )    |  |   | (9,010  | )
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|NET INCOME                                                                |  | $                       | 67,207    |   |      | $ | 50,701    |      |  | $ | 44,193  |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|                                                                          |  |                         |          
|BASIC EARNINGS (LOSS) PER SHARE:                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Class A common stock                                                      |  |                         |           |   |      |   |           |      |  |   |         |  
|Income from continuing operations                                         |  | $                       | 1.97      |   |      | $ | 1.66      |      |  | $ | 1.62    |  
|(Loss) from discontinued operations, net of taxes                         |  |                         |          |   |      |   | (0.15     | )    |  |   | (0.27   | )
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Class A basic earnings per share                                          |  | $                       | 1.97      |   |      | $ | 1.51      |      |  | $ | 1.35    |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Weighted average common shares outstanding                                |  |                         | 19,683    |   |      |   | 18,450    |      |  |   | 17,767  |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Class B common stock                                                      |  |                         |           |   |      |   |           |      |  |   |         |  
|Income from continuing operations                                         |  | $                       | 1.97      |   |      | $ | 1.66      |      |  | $ | 1.62    |  
|(Loss) from discontinued operations, net of taxes                         |  |                         |          |   |      |   | (0.15     | )    |  |   | (0.27   | )
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Class B basic earnings per share                                          |  | $                       | 1.97      |   |      | $ | 1.51      |      |  | $ | 1.35    |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Weighted average common shares outstanding                                |  |                         | 14,431    |   |      |   | 15,062    |      |  |   | 15,065  |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|                                                                          |  |                         |          
|DILUTED EARNINGS (LOSS) PER SHARE:                                        |  |                         |           |   |      |   |           |      |  |   |         |  
|Class A common stock                                                      |  |                         |           |   |      |   |           |      |  |   |         |  
|Income from continuing operations                                         |  | $                       | 1.95      |   |      | $ | 1.64      |      |  | $ | 1.60    |  
|(Loss) from discontinued operations, net of taxes                         |  |                         |          |   |      |   | (0.15     | )    |  |   | (0.27   | )
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Class A diluted earnings per share                                        |  | $                       | 1.95      |   |      | $ | 1.49      |      |  | $ | 1.33    |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Weighted average common shares outstanding                                |  |                         | 20,102    |   |      |   | 18,893    |      |  |   | 18,208  |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Class B common stock                                                      |  |                         |           |   |      |   |           |      |  |   |         |  
|Income from continuing operations                                         |  | $                       | 1.95      |   |      | $ | 1.64      |      |  | $ | 1.60    |  
|(Loss) from discontinued operations, net of taxes                         |  |                         |          |   |      |   | (0.15     | )    |  |   | (0.27   | )
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Class B diluted earnings per share                                        |  | $                       | 1.95      |   |      | $ | 1.49      |      |  | $ | 1.33    |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  
|Weighted average common shares outstanding                                |  |                         | 14,431    |   |      |   | 15,062    |      |  |   | 15,065  |  
|                                                                          |  |                         |           |   |      |   |           |      |  |   |         |  

See notes to consolidated financial statements.



48



---

MANTECH INTERNATIONAL CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In Thousands)



|                                                            |  |                         |        |   |      |   |        |      |  |   |        |  
|----------------------------------------------------------- |  | ----------------------- | ------ | - | ---- | - | ------ | ---- |  | - | ------ | -
|                                                            |  | Year Ended December 31, |       
|                                                            |  | 2007                    |        |   | 2006 |   |        | 2005 | 
|NET INCOME                                                  |  | $                       | 67,207 |   |      | $ | 50,701 |      |  | $ | 44,193 |  
|                                                            |  |                         |       
|OTHER COMPREHENSIVE (LOSS) INCOME:                          |  |                         |        |   |      |   |        |      |  |   |        |  
|Cash flow hedge, net of tax                                 |  |                         |       |   |      |   |       |      |  |   | 152    |  
|Translation adjustments, net of tax                         |  |                         | 6      |   |      |   | (15    | )    |  |   | (242   | )
|Actuarial loss on defined benefit pension plans, net of tax |  |                         | (33    | ) |      |   |       |      |  |   |       |  
|Adoption of SFAS No. 158, net of tax                        |  |                         |       |   |      |   | (93    | )    |  |   |       |  
|                                                            |  |                         |        |   |      |   |        |      |  |   |        |  
|Total other comprehensive (loss) income                     |  |                         | (27    | ) |      |   | (108   | )    |  |   | (90    | )
|                                                            |  |                         |        |   |      |   |        |      |  |   |        |  
|COMPREHENSIVE INCOME                                        |  | $                       | 67,180 |   |      | $ | 50,593 |      |  | $ | 44,103 |  
|                                                            |  |                         |        |   |      |   |        |      |  |   |        |  

See notes to consolidated financial statements.



49



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MANTECH INTERNATIONAL CORPORATION

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY

(Dollars in Thousands)



|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|---------------------------------------------------------------------------- |  | ------------ | ------- | - | ---- | - | ------- | ---- |  | - | ------- | -
|                                                                             |  | December 31, |        
|                                                                             |  | 2007         |         |   | 2006 |   |         | 2005 | 
|Common Stock, Class A                                                        |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  | $            | 190     |   |      | $ | 180     |      |  | $ | 174     |  
|Stock option exercises                                                       |  |              | 7       |   |      |   | 8       |      |  |   | 5       |  
|Conversion Class B to Class A common stock                                   |  |              | 7       |   |      |   | 1       |      |  |   |        |  
|Contribution of Class A common stock to Employee Stock Ownership Plan (ESOP) |  |              | 1       |   |      |   | 1       |      |  |   | 1       |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              | 205     |   |      |   | 190     |      |  |   | 180     |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Common Stock, Class B                                                        |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  |              | 150     |   |      | $ | 151     |      |  | $ | 151     |  
|Conversion Class B to Class A common stock                                   |  |              | (7      | ) |      |   | (1      | )    |  |   |        |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              | 143     |   |      |   | 150     |      |  |   | 151     |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Additional Paid-In Capital                                                   |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  |              | 263,409 |   |      |   | 233,360 |      |  |   | 219,664 |  
|Stock option exercises                                                       |  |              | 13,068  |   |      |   | 16,781  |      |  |   | 9,502   |  
|Tax benefit from the exercise of stock options                               |  |              | 2,696   |   |      |   | 4,362   |      |  |   | 1,895   |  
|Stock option expense                                                         |  |              | 6,706   |   |      |   | 5,830   |      |  |   | 18      |  
|Tax benefit from distribution of shares held in grantor trust                |  |              | 8,581   |   |      |   |        |      |  |   |        |  
|Contribution of Class A common stock to ESOP                                 |  |              | 3,367   |   |      |   | 3,076   |      |  |   | 2,281   |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              | 297,827 |   |      |   | 263,409 |      |  |   | 233,360 |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Treasury Stock, at cost                                                      |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  |              |        |   |      |   |        |      |  |   |        |  
|Treasury stock acquired                                                      |  |              | (9,114  | ) |      |   |        |      |  |   |        |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              | (9,114  | ) |      |   |        |      |  |   |        |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Retained Earnings                                                            |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  |              | 195,604 |   |      |   | 144,903 |      |  |   | 100,710 |  
|Net income                                                                   |  |              | 67,207  |   |      |   | 50,701  |      |  |   | 44,193  |  
|Adoption of FIN 48                                                           |  |              | (125    | ) |      |   |        |      |  |   |        |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              | 262,686 |   |      |   | 195,604 |      |  |   | 144,903 |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Accumulated Other Comprehensive (Loss) Income                                |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  |              | (120    | ) |      |   | (12     | )    |  |   | 78      |  
|Cash flow hedge, net of tax                                                  |  |              |        |   |      |   |        |      |  |   | 152     |  
|Translation adjustments, net of tax                                          |  |              | 6       |   |      |   | (15     | )    |  |   | (242    | )
|Actuarial loss on defined benefit pension plans, net of tax                  |  |              | (33     | ) |      |   |        |      |  |   |        |  
|Adoption of SFAS No. 158, net of tax                                         |  |              |        |   |      |   | (93     | )    |  |   |        |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              | (147    | ) |      |   | (120    | )    |  |   | (12     | )
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Unearned ESOP Shares                                                         |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  |              | (217    | ) |      |   |        |      |  |   | (381    | )
|Unearned ESOP shares in excess of obligation                                 |  |              | (78     | ) |      |   | (217    | )    |  |   | 381     |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              | (295    | ) |      |   | (217    | )    |  |   |        |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Deferred Compensation                                                        |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  |              | 640     |   |      |   | 640     |      |  |   | 640     |  
|Distribution of shares held in grantor trust                                 |  |              | (640    | ) |      |   |        |      |  |   |        |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              |        |   |      |   | 640     |      |  |   | 640     |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Shares Held in Grantors Trust                                               |  |              |         |   |      |   |         |      |  |   |         |  
|At beginning of year                                                         |  |              | (640    | ) |      |   | (640    | )    |  |   | (640    | )
|Distribution of shares held in grantor trust                                 |  |              | 640     |   |      |   |        |      |  |   |        |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|At end of year                                                               |  |              |        |   |      |   | (640    | )    |  |   | (640    | )
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  
|Total Stockholders Equity                                                   |  | $            | 551,305 |   |      | $ | 459,016 |      |  | $ | 378,582 |  
|                                                                             |  |              |         |   |      |   |         |      |  |   |         |  

See notes to consolidated financial statements.



50



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MANTECH INTERNATIONAL CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Dollars in Thousands)



|                                                                                       |  |                         |          |   |      |   |         |      |  |   |          |  
|-------------------------------------------------------------------------------------- |  | ----------------------- | -------- | - | ---- | - | ------- | ---- |  | - | -------- | -
|                                                                                       |  | Year Ended December 31, |         
|                                                                                       |  | 2007                    |          |   | 2006 |   |         | 2005 | 
|CASH FLOWS FROM OPERATING ACTIVITIES:                                                  |  |                         |          |   |      |   |         |      |  |   |          |  
|Net income                                                                             |  | $                       | 67,207   |   |      | $ | 50,701  |      |  | $ | 44,193   |  
|Adjustments to reconcile net income to net cash provided by operating activities:      |  |                         |          |   |      |   |         |      |  |   |          |  
|Equity in earnings of unconsolidated subsidiaries                                      |  |                         |         |   |      |   |        |      |  |   | (503     | )
|Loss from discontinued operations, net of tax                                          |  |                         | 458      |   |      |   | 4,895   |      |  |   | 9,010    |  
|Gain on disposal of operations                                                         |  |                         |         |   |      |   | (955    | )    |  |   | (3,698   | )
|Gain on sale of discontinued operation, net of tax                                     |  |                         | (338     | ) |      |   |        |      |  |   |         |  
|Gain on disposal of equity method investment                                           |  |                         |         |   |      |   |        |      |  |   | (1,590   | )
|Unrealized loss (gain) on warrants                                                     |  |                         | 76       |   |      |   | (543    | )    |  |   |         |  
|Stock-based compensation                                                               |  |                         | 6,706    |   |      |   | 5,830   |      |  |   | 18       |  
|Excess tax benefits from the exercise of stock options                                 |  |                         | (2,374   | ) |      |   | (2,918  | )    |  |   |         |  
|Deferred income taxes                                                                  |  |                         | 284      |   |      |   | (1,271  | )    |  |   | (1,625   | )
|Depreciation and amortization                                                          |  |                         | 14,244   |   |      |   | 10,177  |      |  |   | 8,796    |  
|Change in assets and liabilitiesnet of effects from acquired and disposed businesses: |  |                         |          |   |      |   |         |      |  |   |          |  
|Receivables-net                                                                        |  |                         | (45,275  | ) |      |   | 5,180   |      |  |   | (27,070  | )
|Prepaid expenses and other                                                             |  |                         | 5,498    |   |      |   | (4,271  | )    |  |   | 2,345    |  
|Accounts payable and accrued expenses                                                  |  |                         | 16,350   |   |      |   | 17,950  |      |  |   | 7,633    |  
|Accrued salaries and related expenses                                                  |  |                         | (143     | ) |      |   | 4,777   |      |  |   | 3,538    |  
|Billings in excess of revenue earned                                                   |  |                         | (158     | ) |      |   | (1,328  | )    |  |   | 1,074    |  
|Accrued retirement                                                                     |  |                         | 2,120    |   |      |   | 3,546   |      |  |   | (381     | )
|Dividends from VosperManTech Limited                                                  |  |                         |         |   |      |   |        |      |  |   | 2,962    |  
|Other                                                                                  |  |                         | 231      |   |      |   | (897    | )    |  |   | 2,633    |  
|                                                                                       |  |                         |          |   |      |   |         |      |  |   |          |  
|Net cash flow from operating activities of continuing operations                       |  |                         | 64,886   |   |      |   | 90,873  |      |  |   | 47,335   |  
|Net cash flow from discontinued operations                                             |  |                         | (1,562   | ) |      |   | (6,517  | )    |  |   | 14,151   |  
|                                                                                       |  |                         |          |   |      |   |         |      |  |   |          |  
|Net cash flow from operating activities                                                |  |                         | 63,324   |   |      |   | 84,356  |      |  |   | 61,486   |  
|                                                                                       |  |                         |          |   |      |   |         |      |  |   |          |  
|CASH FLOWS FROM INVESTING ACTIVITIES:                                                  |  |                         |          |   |      |   |         |      |  |   |          |  
|Purchases of property and equipment                                                    |  |                         | (2,721   | ) |      |   | (5,160  | )    |  |   | (5,614   | )
|Proceeds from the sale of property and equipment                                       |  |                         | 1,828    |   |      |   | 6       |      |  |   |         |  
|Investment in capitalized software for internal use                                    |  |                         | (2,113   | ) |      |   | (2,245  | )    |  |   | (1,489   | )
|Exercise of GSE warrants                                                               |  |                         | (133     | ) |      |   |        |      |  |   |         |  
|Proceeds from sale of GSE shares                                                       |  |                         | 600      |   |      |   |        |      |  |   |         |  
|Purchase of minority interest in MASI UK                                               |  |                         |         |   |      |   |        |      |  |   | (86      | )
|Acquisition of businesses, net of cash acquired                                        |  |                         | (275,747 | ) |      |   | (19,845 | )    |  |   | (106,798 | )
|Proceeds from disposal of operations and equity method investment                      |  |                         |         |   |      |   | 2,000   |      |  |   | 8,730    |  
|                                                                                       |  |                         |          |   |      |   |         |      |  |   |          |  
|Net investing cash flow from continuing operations                                     |  |                         | (278,286 | ) |      |   | (25,244 | )    |  |   | (105,257 | )
|Net investing cash flow from discontinued operations                                   |  |                         | 3,000    |   |      |   | (465    | )    |  |   | (360     | )
|                                                                                       |  |                         |          |   |      |   |         |      |  |   |          |  
|Net cash flow from investing activities                                                |  |                         | (275,286 | ) |      |   | (25,709 | )    |  |   | (105,617 | )
|                                                                                       |  |                         |          |   |      |   |         |      |  |   |          |  

See notes to consolidated financial statements.



51



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MANTECH INTERNATIONAL CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Dollars in Thousands)



|                                                                                               |  |                         |         |   |      |   |         |      |  |   |         |  
|---------------------------------------------------------------------------------------------- |  | ----------------------- | ------- | - | ---- | - | ------- | ---- |  | - | ------- | -
|                                                                                               |  | Year Ended December 31, |        
|                                                                                               |  | 2007                    |         |   | 2006 |   |         | 2005 | 
|CASH FLOWS FROM FINANCING ACTIVITIES:                                                          |  |                         |         |   |      |   |         |      |  |   |         |  
|Proceeds from exercise of stock options                                                        |  |                         | 13,075  |   |      |   | 16,790  |      |  |   | 9,507   |  
|Excess tax benefits from the exercise of stock options                                         |  |                         | 2,374   |   |      |   | 2,918   |      |  |   |        |  
|Excess tax benefit from distribution of shares held in grantor trust                           |  |                         | 8,581   |   |      |   |        |      |  |   |        |  
|Treasury stock acquired                                                                        |  |                         | (9,114  | ) |      |   |        |      |  |   |        |  
|Borrowing under line of credit, non-current                                                    |  |                         | 39,000  |   |      |   |        |      |  |   |        |  
|Net increase (decrease) in borrowing under lines of credit, net of associated origination fees |  |                         | 124,584 |   |      |   | (42,402 | )    |  |   | 17,402  |  
|Repayment of notes payable                                                                     |  |                         |        |   |      |   | (121    | )    |  |   | (63     | )
|                                                                                               |  |                         |         |   |      |   |         |      |  |   |         |  
|Net cash flow from financing activities                                                        |  |                         | 178,500 |   |      |   | (22,815 | )    |  |   | 26,846  |  
|                                                                                               |  |                         |         |   |      |   |         |      |  |   |         |  
|NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS                                           |  |                         | (33,462 | ) |      |   | 35,832  |      |  |   | (17,285 | )
|CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD                                                 |  |                         | 41,510  |   |      |   | 5,678   |      |  |   | 22,963  |  
|                                                                                               |  |                         |         |   |      |   |         |      |  |   |         |  
|CASH AND CASH EQUIVALENTS, END OF PERIOD                                                       |  | $                       | 8,048   |   |      | $ | 41,510  |      |  | $ | 5,678   |  
|                                                                                               |  |                         |         |   |      |   |         |      |  |   |         |  
|SUPPLEMENTAL CASH FLOW INFORMATION                                                             |  |                         |         |   |      |   |         |      |  |   |         |  
|Noncash financing activities:                                                                  |  |                         |         |   |      |   |         |      |  |   |         |  
|ESOP Contributions                                                                             |  | $                       | 3,290   |   |      | $ | 2,859   |      |  | $ | 2,663   |  
|                                                                                               |  |                         |         |   |      |   |         |      |  |   |         |  

See notes to consolidated financial statements.



52



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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Years Ended December 31, 2007, 2006 and 2005

1. Description of the Business

ManTech is a
provider of innovative technologies and solutions for mission-critical national security programs for the Intelligence Community, the Departments of Defense, State, Homeland Security, and Justice, and other U.S. federal government agencies. Our
expertise includes engineering, systems integration, software services, enterprise architecture, information assurance and security architecture, intelligence operations and analysis support, network and critical infrastructure protection,
information operations and computer forensics, information technology, communications integration, and engineering support. With approximately 7,300 highly-qualified employees, we operate in the United States and over 40 countries worldwide.

2. Summary of Significant Accounting Policies

Principles of ConsolidationOur consolidated financial statements include the accounts of ManTech International Corporation, wholly-owned subsidiaries and other entities, which we control. Minority interest represents
minority stockholders proportionate share of the equity in one of our consolidated subsidiaries. Our share of affiliates earnings (losses) that we do not control is included in the consolidated statements of income using the equity
method. All inter-company accounts and transactions have been eliminated.

We determine whether we have a controlling financial interest in
an entity by evaluating whether the entity is a variable interest entity (VIE) or not in accordance with Financial Accounting Standards Board (FASB) Interpretation No. 46, Consolidation of Variable Interest
Entities as revised (FIN 46(R)). VIEs are entities in which equity investors do not have the characteristics of a controlling financial interest or do not have sufficient equity at risk for the entity to finance its activities
without additional subordinated financial support. We consolidate VIEs where ManTech is the primary beneficiary, generally defined as the enterprise that will absorb a majority of the expected losses or receive a majority of the expected residual
returns of the entity, or both.

ManTech has one entity which has been consolidated under FIN 46(R). The purpose of the entity is to
perform on certain U.S. Navy contracts. The maximum amount of loss ManTech is exposed to as of December 31, 2007 is not material to the financial statements.

Use of Accounting EstimatesWe prepare our consolidated financial statements in conformity with accounting principles generally accepted in the United States of America which requires management to
make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the
reporting period. These estimates involve judgments with respect to, among other things, various future economic factors that are difficult to predict and are beyond the control of the company. Therefore, actual amounts could differ from these
estimates.

Revenue RecognitionThe majority of our revenues are derived from cost-plus-fixed-fee, cost-plus-award fee,
firm-fixed-price, or time-and-materials contracts. Under cost-plus-fixed or award-fee contracts, revenues are recognized as costs are incurred and include an estimate of applicable fees earned. For performance-based fees under cost reimbursable
contracts, that are subject to the provisions of American Institute of Certified Public Accountants (AICPA) Statement of Position (SOP) No. 81-1, Accounting for Performance of Construction-Type and Certain
Production-Type Contracts(SOP 81-1), we recognize the relevant portion of the expected fee to be awarded by the client at the time such fee can be reasonably estimated, based on factors such as our prior award experience and communications with
the client regarding performance. For cost reimbursable contracts with performance-based fee incentives that are subject to the provisions of U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 104, Revenue Recognition
(SAB 104), we recognize the relevant portion of the fee upon customer approval. For time-and-material contracts, revenues are computed by



53



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



multiplying the number of direct labor-hours expended in the performance of the contract by the contract billing rates and adding other billable direct
costs. For long-term fixed-price production contracts, revenue is recognized at a rate per unit as the units are delivered, or by other methods to measure services provided. Revenue from other long-term fixed-price contracts is recognized ratably
over the contract period or by other appropriate methods to measure services provided. Contract costs are expensed as incurred except for certain limited long-term contracts noted below. For long-term contracts which are specifically described in
the scope section of SOP 81-1, Accounting for Performance of Construction Type and Certain Production-Type Contracts, or other appropriate accounting literature, we apply the percentage of completion method. Under the percentage of
completion method, income is recognized at a consistent profit margin over the period of performance based on estimated profit margins at completion of the contract. This method of accounting requires estimating the total revenues and total contract
cost at completion of the contract. During the performance of long-term contracts, these estimates are periodically reviewed and revisions are made as required. The impact on revenue and contract profit as a result of these revisions is included in
the periods in which the revisions are made. This method can result in the deferral of costs or the deferral of profit on these contracts. Because we assume the risk of performing a fixed-price contract at a set price, the failure to accurately
estimate ultimate costs or to control costs during performance of the work could result, and in some instances has resulted, in reduced profits or losses for such contracts. Estimated losses on contracts at completion are recognized when identified.
In certain circumstances, revenues are recognized when contract amendments have not been finalized.

Cost of
ServicesCost of services consists primarily of compensation expenses for program personnel, the fringe benefits associated with this compensation, and other direct expenses incurred to complete programs, including cost of materials and
subcontract efforts.

Cash and Cash EquivalentsFor the purpose of reporting cash flows, cash and cash equivalents
include cash on hand, amounts due from banks, and short-term investments with maturity dates of three months or less at the date of purchase. Due to the short maturity of cash equivalents, the carrying value on our consolidated balance sheet
approximates fair value.

Property and EquipmentProperty and equipment are recorded at original cost. Upon sale or
retirement, the costs and related accumulated depreciation or amortization are eliminated from the respective accounts and any resulting gain or loss is included in income. Maintenance and repairs are charged to expense as incurred.

Depreciation and AmortizationFurniture and office equipment are depreciated using the straight-line method with estimated useful
lives ranging from five to fifteen years. Leasehold improvements are amortized using the straight-line method over the term of the lease. Office buildings are depreciated using the straight-line method with estimated useful lives of twenty-five
years.

InventoryInventory is included in prepaid expenses and other in our consolidated balance sheet and is carried
at the lower of cost or market. Cost is computed on a specific identification basis. There was no inventory valuation allowance at December 31, 2007 and $0.6 million at December 31, 2006.

Goodwill and Other IntangiblesnetGoodwill represents the excess of cost over the fair value of net tangible and identifiable
intangible assets of acquired companies. Contract rights and other intangibles are amortized on a straight-line basis over periods ranging from three to twenty-five years.

We accounted for the cost of computer software developed or obtained for internal use in accordance with Statement of Position (SOP) No. 98-1. These
capitalized software costs are included in Other Intangibles.



54



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Software Development CostsWe account for software development costs related to
software products for sale, lease or otherwise marketed in accordance with Statement of Financial Accounting Standards (SFAS) No. 86, Accounting for the Costs of Computer Software to be Sold, Leased, or Otherwise Marketed. For projects
fully funded by us, significant development costs are capitalized from the point of demonstrated technological feasibility until the point in time that the product is available for general release to customers. Once the product is available for
general release, capitalized costs are amortized based on units sold, or on a straight-line basis over a five-year period or other such shorter period as may be required. We recorded $1.4 million, $1.1 million, and $1.3 million per year of
amortization expense for the years ended December 31, 2007, 2006 and 2005, respectively. Amortization expense for the year ended December 31, 2007 includes a write down of an acquisition related intangible asset for internally developed
software of $0.9 million. The write down was based on a change in the estimated net realizable value of the asset. Capitalized software costs included in Other Intangibles at December 31, 2007 and 2006, were $1.2 million and $3.0 million per
year, respectively.

Impairment of Long-Lived AssetsWhenever events or changes in circumstances indicate that the
carrying amount of long-lived assets may not be fully recoverable, we evaluate the probability that future undiscounted net cash flows, without interest charges, will be less than the carrying amount of the assets. If any impairment were indicated
as a result of this review, we would recognize a loss based on the amount by which the carrying amount exceeds the estimated fair value.

We no longer amortize goodwill; rather we review goodwill at least annually for impairment. We have elected to perform this review annually during the second quarter of each calendar year and no adjustments were necessary for our continuing
operations.

Employee Supplemental Savings Plan (ESSP) AssetsWe maintain several non-qualified defined contribution
supplemental retirement plans for certain key employees that are accounted for in accordance with Emerging Issues Task Force (EITF) Issue No. 97-14, Accounting for Deferred Compensation Arrangements Where Amounts Earned Are Held in a Rabbi
Trust and Invested, as the underlying assets are held in rabbi trusts with investments directed by the respective employee. A rabbi trust is a grantor trust generally set up to fund compensation for a select group of management and the assets of
this trust are available to satisfy the claims of general creditors in the event of bankruptcy of the company. As required by EITF 97-14, the assets held by the rabbi trusts are recorded at fair value in the consolidated financial statements as
Employee Supplemental Savings Plan Assets with a related liability to employees recorded as a deferred compensation liability in Accrued Retirement.

Billings In Excess of RevenueWe receive advances and progress payments from customers that exceed the revenue earned to date. We classify such items as current liabilities.

Stock-based Compensation Effective January 1, 2006, we adopted FASB SFAS No. 123 (revised 2004), Share-Based
Payment, using the modified prospective method. Under this method, compensation costs for all awards granted after the date of adoption and the unvested portion of previously granted awards are measured at an estimated fair value and included in
operating expenses or capitalized as appropriate over the period in which an employee provides service in exchange for the award.

Income TaxesWe account for income taxes in accordance with Statement of Financial Accounting Standard No. 109, or FAS 109,Accounting for Income Taxes, as clarified by FASB Interpretation No. 48,Accounting for Uncertainty in Income Taxes (FIN 48). Under this method, deferred income taxes are determined based on the estimated future tax effects of differences between the financial statement and tax bases of assets and liabilities given
the provisions of enacted tax laws. Deferred income tax provisions and benefits are based on changes to the assets or liabilities from year to year. In providing for deferred taxes, we consider tax regulations



55



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



of the jurisdictions in which we operate, estimates of future taxable income, and available tax planning strategies. If tax regulations, operating results or
the ability to implement tax-planning strategies vary, adjustments to the carrying value of deferred tax assets and liabilities may be required. Valuation allowances are recorded related to deferred tax assets based on the more likely than
not criteria of FAS 109.

FIN 48 requires that we recognize the financial statement benefit of a tax position only after determining
that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more likely than not threshold, the amount recognized in the financial statements is the
largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority. This interpretation also provides guidance on measurement, derecognition, classification, interest and
penalties, accounting in interim periods, disclosures, and transition. FIN 48 is effective for fiscal years beginning after December 15, 2006. We adopted the provisions of FIN 48 on January 1, 2007. As a result of the implementation of FIN
48, we recognized approximately a $0.1 million increase in the liability for unrecognized tax benefits, which was recorded for as a reduction to the January 1, 2007 balance of retained earnings. See footnote 12 for further discussion on the
adoption of FIN 48.

Foreign Currency TranslationAll assets and liabilities of foreign subsidiaries are translated into
U.S. dollars at fiscal year-end exchange rates. Income and expense items are translated at average monthly exchange rates prevailing during the fiscal year. The resulting translation adjustments are recorded as a component of Accumulated Other
Comprehensive Income (Loss).

Comprehensive Income (Loss)Comprehensive income is presented in the Consolidated
Statements of Changes in Stockholders Equity. Comprehensive income (loss) consists of net income (loss), unrealized gains or losses on our cash flow hedge, unrealized holding gain on available for sale securities, changes in our unfunded
pension liability, and foreign currency translation adjustments.

Fair Value of Financial InstrumentsThe carrying value
of our cash and cash equivalents, accounts receivable, accounts payable, accrued expenses and debt approximate their fair values.

Recent Accounting
Pronouncements

In September 2006, the FASB issued SFAS No. 158, Employers Accounting for Defined Benefit Pension
and Other Postretirement Plans, an amendment of FASB Statements No. 87, 88, 106 and 132(R). SFAS 158, which represents the completion of the first phase in the FASBs postretirement benefits accounting project, applies to
all plan sponsors who offer defined postretirement benefit plans and requires an entity to:



| |  |  | Recognize in its balance sheet an asset for a defined benefit postretirement plans over-funded status or a liability for a plans under-funded status.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Measure a defined benefit postretirement plans assets and obligations that determine its funded status as of the end of the employers fiscal year.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Recognize changes in the funded status of a defined benefit postretirement plan in comprehensive earnings in the year in which the changes occur.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------

SFAS 158 does not change the amount of net periodic benefit
cost included in net earnings. The requirement to recognize the funded status of a defined benefit postretirement plan and the disclosure requirements are effective for fiscal years ending after December 15, 2006 for public entities.
Accordingly, we made adjustments to initially adopt SFAS 158 in the fourth quarter of 2006. The requirement to measure plan assets and benefit obligations as of the date of the employers fiscal year end balance sheet is effective for
fiscal years ending after December 15, 2008. Our defined benefit pension plans have a fiscal year end of December 31stand therefore the
measurement date provisions of the standard were not applicable.



56



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



In September 2006, the FASB issued Statement No. 157 (SFAS 157), Fair Value
Measurements, which defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. SFAS 157 applies to other accounting pronouncements that require or permit fair value
measurements, but does not require any new fair value measurements. A fair value hierarchy was established to classify the inputs used in measuring fair value. SFAS 157 requires disclosure of the level in the fair value hierarchy in which the fair
value measurements in their entirety fall. On October 17, 2007, the FASB deferred the effective date for nonfinancial assets and liabilities to fiscal years beginning after November 15, 2008. For fiscal years beginning after
November 15, 2007, the Company will be required to implement SFAS 157 for financial assets and liabilities, as well as for any other assets and liabilities that are carried at fair value on a recurring basis in the financial statements. The
Company does not expect the adoption of SFAS 157 for financial assets and liabilities will have a material impact on its consolidated financial statements. At this time we are assessing the impact the adoption of SFAS 157 for nonfinancial assets and
liabilities will have on our consolidated financial statements.

In February 2007, the FASB issued Statement No. 159 (SFAS 159),
The Fair Value Option for Financial Assets and LiabilitiesIncluding an amendment of FASB Statement No. 115, which permits entities to measure eligible items at fair value. For items where the fair value
election is made, the company will be required to report unrealized gains or losses in earnings. SFAS 159 is effective for fiscal years beginning after November 15, 2007. We do not expect the adoption of SFAS 159 to have a material impact on
our consolidated financial statements.

In December 2007, FASB issued SFAS No. 141 (revised 2007), Business
Combinations, (SFAS 141R). The new standard moves closer to a fair value model by requiring the acquirer to measure all assets acquired and all liabilities assumed at their respective fair values at the date of acquisition,
including the measurement of noncontrolling interests at fair value. The Statement also establishes principles and requirements as to how the acquirer recognizes and measures goodwill acquired in a business combination or a gain from a bargain
purchase and determines what information to disclose to enable users of the financial statements to evaluate the nature and financial effects of the business combination. In addition, SFAS 141R significantly changes the accounting for business
combinations in a number of areas, including the treatment of contingent consideration, preacquisition contingencies, in-process research and development, restructuring costs, and requires the expensing of acquisition-related costs as incurred.

The effective date of SFAS 141R is for fiscal years beginning after December 15, 2008. For transactions consummated after the
effective date of SFAS 141R, prospective application of the new standard is applied. For business combinations consummated prior to the effective date of SFAS 141R, the guidance in SFAS 141 is applied.

In December 2007, the FASB issued SFAS No. 160, Noncontrolling Interests in Consolidated Financial Statements, which amends
Accounting Research Bulletin No. 51 and provides accounting and reporting standards for the noncontrolling interest in a subsidiary, commonly referred to as minority interest, and for the deconsolidation of a subsidiary. The new standard
requires noncontrolling interests to be presented separately within equity in the consolidated statement of financial position. Consolidated net income attributable to the parent and noncontrolling interests will be clearly identified and presented
on the face of the statement of operations. When a change in control of a subsidiary occurs it will either be accounted for as an equity transaction, when control is maintained, or a gain or loss will be recognized when control is not maintained.
The remaining noncontrolling interest will be remeasured to fair value when control is lost. SFAS 160 requires that the noncontrolling interest continue to be attributed its share of losses and thus is no longer limited to the original carrying
amount of the noncontrolling interest. This may result in a negative carrying balance.



57



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



The effective date of SFAS 160 is for fiscal years beginning after December 15, 2008. The
Statement will be applied prospectively as of the beginning of the year in which the Statement is adopted except for presentation and disclosure requirements which will be applied retrospectively for all periods presented. We do not expect the
adoption of SFAS 160 to have a material impact on our consolidated financial statements.

In March 2007, the FASB Emerging Issues Task
Force ratified Issue 06-10 (EITF 06-10),Accounting for Deferred Compensation and Postretirement Benefit Aspects of Collateral Assignment Split-Dollar Life Insurance Arrangements, which clarifies the treatment
of split dollar life insurance arrangements in regards to SFAS 106 and APB 12. An employer should recognize a liability for future benefits in accordance with SFAS 106 (if, in substance, a postretirement benefit plan exists) or Opinion 12 (if the
arrangement is, in substance, an individual deferred compensation contract) based on the substantive agreement with the employee.

EITF
06-10 is effective for fiscal years beginning after December 15, 2007. We do not expect the adoption of EITF 06-10 to have a significant impact on our consolidated financial statements or effective tax rate.

3. Acquisitions

Each of the following acquisitions
has been accounted for as a purchase, and accordingly, the operating results of each of the acquired entities have been included in our consolidated financial statements since the respective dates of acquisition.

McDonald Bradley AcquisitionOn December 18, 2007, we completed the acquisition of all outstanding equity interests in McDonald
Bradley, Inc. (McDonald Bradley). The results of McDonald Bradleys operations have been included in the consolidated financial statements since that date. The acquisition was consummated pursuant to an Agreement and Plan of Merger
(Merger Agreement), dated November 15, 2007, by and among ManTech, McDonald Bradley, Spyglass Acquisition Corp., a newly formed and wholly owned subsidiary of the Company (Merger Sub), and a Shareholder Representative
for the shareholders of McDonald Bradley. Pursuant to the terms of the Merger Agreement, Merger Sub merged with and into McDonald Bradley, with McDonald Bradley continuing as the surviving corporation and a wholly owned subsidiary of the Company. At
December 18, 2007, McDonald Bradley had 264 employees including approximately two-thirds who held clearances. For calendar year 2007, McDonald Bradleys revenues were $49.5 million.

McDonald Bradley, was a privately-held company, doing business as a secure information sharing and IT solutions provider to the federal government with a
focus on Department of Defense (DOD), Intelligence Community and Homeland Security markets. McDonald Bradley is a leading provider of high-end, mission-critical, technology-differentiated solutions primarily in areas of Service Oriented
Architectures, data interoperability and information assurance.

Management believes the acquisition of McDonald Bradley has deepened our
capabilities in the high-end defense, intelligence and homeland security marketplace and strengthens our position as a leading provide of secure information sharing and data interoperability solutions.

The initial purchase price was $78.7 million, which included $0.3 million in transaction fees. The initial purchase price included a closing date working
capital adjustment of $1.9 million which is subject to further adjustment upon review of the closing balance sheet. Pursuant to the Merger Agreement, $6.6 million of the purchase price was placed into an escrow account to satisfy potential
indemnification liabilities of the Company, and to satisfy potential expenses of the Shareholder Representative. The escrow term is for a period of sixteen months. We utilized borrowings under our New Credit Agreement (see Note 8) to finance the
acquisition.



58



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



The preliminary purchase price was allocated to the underlying assets and liabilities based on their
estimated fair values. The fair value assigned to the assets and liabilities is still under review and could be adjusted upon completion of our assessment of fair value. Total assets were $85.4 million and total liabilities were $6.7 million. Other
than goodwill and other intangible assets recognized in connection with the acquisition, the assets, liabilities and result of operations of McDonald Bradley were not significant to the companys consolidated financial position or results of
operations, and thus pro forma information is not presented. We recorded initial goodwill of $63.0 million, which, assuming adequate levels of taxable income, will be deductible for tax purposes over 15 years. Recognition of goodwill is largely
attributed to the highly skilled employees and the value paid for companies supporting high-end defense, intelligence and homeland security markets. The following table sets forth the estimated components of intangible assets associated with the
acquisition at December 18, 2007 (in thousands):



|                           |  |           |        |                      |         
|-------------------------- |  | --------- | ------ | -------------------- | --------
|                           |  | FairValue |        | Estimated UsefulLife
|Backlog                    |  | $         | 750    |                      | 1 year  
|Customer Relationships     |  | $         | 9,450  |                      | 20 years
|Non-competition agreements |  | $         | 25     |                      | 2 years 
|                           |  |           |        |                      |         
|Total                      |  | $         | 10,225 |                      |         
|                           |  |           |        |                      |         

Customer contracts and related relationships represent the underlying relationships and agreements
with McDonald Bradleys existing customers. Intangible assets are being amortized over their estimated useful life using the pattern of benefits method. The weighted-average amortization period for the intangibles is 18.6 years.

SRS AcquisitionOn May 7, 2007, we completed the acquisition of all outstanding equity interests in SRS Technologies
(SRS). The results of SRSs operations have been included in the consolidated financial statements since that date. The acquisition was consummated pursuant to an Agreement and Plan of Merger (Merger Agreement), dated
April 6, 2007, by and among ManTech, a wholly owned subsidiary of ManTech SRS, certain shareholders of SRS, and certain persons acting as a representative for the shareholders of SRS. The Merger Agreement provided for the merger of a wholly
owned subsidiary of ManTech with and into SRS, with SRS surviving the merger and becoming a wholly owned subsidiary of ManTech (ManTech SRS).

SRS was a privately-held company with specialized domain knowledge in the areas of space-based radar and communications; chemical, biological, conventional and nuclear weapons detection and defeat programs; imagery
intelligence; and aeronautic, space and information systems development. More than 85 percent of SRSs revenue has historically been derived from the U.S. government including Department of Defense, Intelligence Community and the Department of
Homeland Security. SRS had over 800 employees, including highly-cleared and educated personnel, at May 7, 2007.

Management believes
the acquisition of SRS has extended our presence in the high-end national security marketplace and enhances our presence in the US Defense Advance Research Projects Agency (DARPA), Department of Homeland Security, Missile Defense Agency, National
Reconnaissance Office, National Geospatial-Intelligence Agency, and other Department of Defense agencies.

The initial purchase price was
$199.0 million, which included $1.0 million in transaction fees. The initial purchase price included a closing date working capital adjustment of $2.9 million which is subject to further negotiations with the seller pursuant to the results of the
closing balance sheet audit. Pursuant to the Merger Agreement, and as security for the SRS shareholders indemnification for unanticipated contingencies, an escrow account in the amount of $36.1 million has been established for a period of
three years from the date of acquisition. We utilized a combination of cash on hand and borrowings under our New Credit Agreement (see Note 8) to finance the acquisition.



59



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Preliminary Purchase Price Allocation

The acquisition has been accounted for as a business combination. Under business combination accounting, the total purchase price was allocated to
SRSs net tangible and identifiable intangible assets based on their estimated fair values as of May 7, 2007, as set forth below. The excess of the purchase price over the net tangible and identifiable intangible assets was recorded as
goodwill. Recognition of goodwill is largely attributed to the highly skilled employees of SRS, their presence in the high-end security marketplace, and the value paid for companies in this business. The goodwill is not deductible for tax purposes.
The following table represents the purchase price allocation (in thousands):



|                                      |  |   |         |  
|------------------------------------- |  | - | ------- | -
|Cash and cash equivalents             |  | $ | 1,912   |  
|Receivables-net                       |  |   | 44,117  |  
|Prepaid expenses and other            |  |   | 5,180   |  
|Property and equipment                |  |   | 2,922   |  
|Other assets                          |  |   | 332     |  
|Other intangible assets               |  |   | 58      |  
|Contract and program intangibles      |  |   | 40,900  |  
|Goodwill                              |  |   | 150,345 |  
|Accounts payable and accrued expenses |  |   | (12,018 | )
|Accrued salaries and related expenses |  |   | (11,821 | )
|Deferred income taxes-current         |  |   | (2,312  | )
|Billings in excess of revenue earned  |  |   | (2,744  | )
|Deferred income taxes-non-current     |  |   | (13,705 | )
|Accrued retirement                    |  |   | (103    | )
|Other long-term liabilities           |  |   | (4,099  | )
|                                      |  |   |         |  
|Total preliminary purchase price      |  | $ | 198,964 |  
|                                      |  |   |         |  

Intangible Assets

In allocating the purchase price, we considered, among other factors, our intention for future use of acquired assets, analyses of historical financial
performance and estimates of future performance of SRSs contracts. The following table sets forth the preliminary values for the components of intangible assets associated with the acquisition at May 7, 2007 (in thousands):



|                       |  |           |        |                      |         
|---------------------- |  | --------- | ------ | -------------------- | --------
|                       |  | FairValue |        | Estimated UsefulLife
|Backlog                |  | $         | 17,710 |                      | 9 years 
|Customer relationships |  |           | 23,060 |                      | 20 years
|Technology             |  |           | 130    |                      | 6 years 
|                       |  |           |        |                      |         
|Total                  |  | $         | 40,900 |                      |         
|                       |  |           |        |                      |         

Customer contracts and related relationships represent the underlying relationships and agreements
with SRSs existing customers. Technology represents certain licenses, patents and software of SRS. Intangible assets are being amortized over their estimated useful life using the pattern of benefits method. The weighted-average amortization
period for the intangibles is 15.2 years.

Pro Forma Financial Information

The unaudited financial information in the table below summarizes the combined results of operations of ManTech and SRS, on a pro forma basis, as though
the companies had been combined as of the beginning of



60



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



each of the periods presented. The pro forma financial information is presented for informational purposes only and is not indicative of the results of
operations that would have been achieved if the acquisition and borrowings under our New Credit Agreement (see Note 8) had taken place at the beginning of each of the periods presented. The pro forma financial information for all periods
presented includes the business combination accounting effect on historical ManTech for amortization charges from acquired intangible assets, interest expense at our current level of debt, removal of SRSs CEO salary and benefit related costs,
and the related tax effects.



|                                                        |      |                         |           |  |   |          
|------------------------------------------------------- | ---- | ----------------------- | --------- |  | - | ---------
|(in thousands except per share amounts)                 |      | Year Ended December 31,
|                                                        | 2007 |                         | 2006     
|Revenue                                                 |      | $                       | 1,524,689 |  | $ | 1,287,799
|Income from continuing operationsnet of taxes          |      | $                       | 68,048    |  | $ | 55,412   
|Net income                                              |      | $                       | 67,928    |  | $ | 50,483   
|Diluted earnings per share (Class A and B common stock) |      | $                       | 1.97      |  | $ | 1.49     

GRS Solutions, Inc.On October 5, 2006, we completed the acquisition of
all outstanding shares of GRS Solutions, Inc. (GRS) for $19.8 million in cash, subject to certain shareholder indemnification obligations. The source of funds for the acquisition was our available cash.

GRS was a privately held company headquartered in Falls Church, Virginia providing specialized technical, operational and analytical services to the
Intelligence Community. The acquisition improves our strategic position within the intelligence community and strengthens our capabilities in supporting counterterrorism/counterintelligence missions around the world. For its fiscal year ended
September 30, 2006, GRS had revenues of approximately $10.4 million. For the year ending December 31, 2006, GRS contributed $2.7 million in revenue to our consolidated results of operations.

The purchase price was $20.0 million, which includes a closing balance sheet adjustment of $(0.2) million and contingent consideration of $2.2 million
based on a defined performance objective which was met subsequent to the initial purchase. As security for the GRS shareholders indemnification obligations, an escrow account in an amount of $1.8 million was established to be used in
satisfying certain indemnification obligations of the former shareholders of GRS. The purchase price was allocated to the underlying assets and liabilities based on their estimated fair values. The assets, liabilities and result of operations of GRS
were not significant to the companys consolidated financial position or results of operations, and thus pro forma information is not presented. We recorded goodwill of $11.8 million, which, assuming adequate levels of taxable income will be
deductible for tax purposes over 15 years. Recognition of goodwill is largely attributed to the highly skilled employees and the value paid for companies supporting the Intelligence Community. The following table sets forth the components of
intangible assets associated with the acquisition at October 5, 2006 (in thousands):



|                        |  |           |       |                      |         
|----------------------- |  | --------- | ----- | -------------------- | --------
|                        |  | FairValue |       | Estimated UsefulLife
|Backlog                 |  | $         | 3,200 |                      | 4 years 
|Customer Relationships  |  |           | 4,700 |                      | 15 years
|                        |  |           |       |                      |         
|Total Intangible Assets |  | $         | 7,900 |                      |         
|                        |  |           |       |                      |         

Customer contracts and related relationships represent the underlying relationships and agreements
with GRSs existing customers. Intangible assets are being amortized straight-line method over their estimated useful life. The weighted-average amortization period for the intangibles is 10.5 years.

Gray Hawk Systems, Inc.On May 31, 2005, we completed the acquisition of 100 percent of outstanding shares of Gray Hawk Systems,
Inc. (Gray Hawk). Gray Hawk provides a broad range of intelligence-related



61



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



services to the homeland security, law enforcement, Intelligence Community and the Department of Defense markets. The acquisition was consummated pursuant to
an Agreement and Plan of Merger, dated May 3, 2005, which provided for the merger of a wholly owned subsidiary of ManTech with and into Gray Hawk, with Gray Hawk surviving the merger and becoming a wholly owned subsidiary of ManTech
(ManTech Gray Hawk).

The Gray Hawk acquisition further solidified our position as a supplier of services in the high-end
intelligence market. It expanded our presence in homeland security related missions and complimented our high-end offerings for the Intelligence Community and Department of Defense. Gray Hawks capabilities rounded-out ManTechs skills in
the end-to-end, intelligence information processing cycle, and gave ManTech access to new markets in national defense agencies.

The
purchase price for the acquisition was $101.8 million in cash, which included transaction costs of $0.3 million. The purchase price included the full payment of Gray Hawks outstanding debt, repurchase of employee stock options by Gray Hawk,
transaction costs and other related transaction expenses. Assuming we continue to produce adequate levels of taxable income, $72.9 million of the $75.4 million in goodwill will be deducted for tax purposes over 15 years.

Purchase Price Allocation

The
acquisition has been accounted for as a business combination. Under business combination accounting, the total purchase price was allocated to Gray Hawks net tangible and identifiable intangible assets based on their estimated fair values as
of May 31, 2005, as set forth below. The excess of the purchase price over the net tangible and identifiable intangible assets was recorded as goodwill. Recognition of goodwill is largely attributed to the highly skilled employees of Gray Hawk
and the value paid for companies in this business. The following table represents the purchase price allocation (in thousands).



|                                          |  |   |         |  
|----------------------------------------- |  | - | ------- | -
|Cash                                      |  | $ | 608     |  
|Accounts receivable                       |  |   | 18,584  |  
|Prepaid expenses and other current assets |  |   | 455     |  
|Fixed assets                              |  |   | 799     |  
|Other assets                              |  |   | 284     |  
|Intangible assets                         |  |   | 15,650  |  
|Goodwill                                  |  |   | 75,389  |  
|Accounts payable                          |  |   | (4,345  | )
|Payroll liabilities                       |  |   | (3,576  | )
|Deferred tax liability                    |  |   | (1,528  | )
|Billings in excess of revenue earned      |  |   | (321    | )
|Other liabilities                         |  |   | (190    | )
|                                          |  |   |         |  
|Total purchase price                      |  | $ | 101,809 |  
|                                          |  |   |         |  



62



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Intangible Assets

In allocating the purchase price, we considered, among other factors, our intention for future use of acquired assets, analyses of historical financial
performance and estimates of future performance of Gray Hawks contracts. The following table sets forth the components of intangible assets associated with the acquisition at May 31, 2005 (in thousands):



|                       |  |           |        |                      |         
|---------------------- |  | --------- | ------ | -------------------- | --------
|                       |  | FairValue |        | Estimated UsefulLife
|Backlog                |  | $         | 5,450  |                      | 6 years 
|Customer Relationships |  |           | 7,200  |                      | 20 years
|Intellectual Property  |  |           | 3,000  |                      | 7 years 
|                       |  |           |        |                      |         
|Total                  |  | $         | 15,650 |                      |         
|                       |  |           |        |                      |         

Customer contracts and related relationships represent the underlying relationships and agreements
with Gray Hawks existing customers. Intangible assets are being amortized using the straight-line method.

Pro Forma Financial
Information

The unaudited pro forma financial information for the year ended December 31, 2005, combines the historical results
for ManTech and Gray Hawk assuming the acquisition occurred on January 1, 2005. The pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if
the acquisition and borrowings under our Credit Agreement (see Note 8) had taken place at the beginning of each of the periods presented. The pro forma financial information for the twelve months ended December 31, 2005 excludes third
party expenses of $0.5 million, severance and bonus of $2.2 million, and a stock option repurchase of $7.4 million recorded by Gray Hawk in their historical statements of operations related to our Agreement and Plan of Merger dated May 3,
2005. The pro forma financial information for all periods presented also includes the business combination accounting effect on historical ManTech for amortization charges from acquired intangible assets, interest expense at our current level of
debt, and the related tax effects.



|                                                              |  |                            |          
|------------------------------------------------------------- |  | -------------------------- | ---------
|(in thousands except per share amounts)                       |  | Year EndedDecember 31,2005
|Revenue                                                       |  | $                          | 1,011,245
|Income from continuing operationsnet of taxes                |  | $                          | 53,161   
|Net income                                                    |  | $                          | 44,159   
|Diluted earnings per share (Class A and Class B common stock) |  | $                          | 1.33     

4. Earnings per Share

In SFAS No. 128, Earnings per Share (as amended), the two-class method is an earnings allocation formula that determines earnings per share for each class of common stock
according to dividends declared (or accumulated) and participation rights in undistributed earnings. Under that method, basic and diluted EPS data are presented for each class of common stock.

In applying the two-class method, we determined that undistributed earnings should be allocated equally on a per share basis between Class A and
Class B Common Stock. Under the Companys Certificate of Incorporation, the holders of the Common Stock shall be entitled to participate ratably, on a share-for-share basis as if all shares of Common Stock were of a single class, in such
dividends, as may be declared by the Board of Directors from time to time.



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Basic earnings per share has been computed by dividing net income available to common stockholders by
the weighted average number of shares of common stock outstanding during each period. Shares issued during the period and shares reacquired during the period are weighted for the portion of the period in which the shares were outstanding. Diluted
earnings per share has been computed in a manner consistent with that of basic earnings per share while giving effect to all potentially dilutive common shares that were outstanding during each period.

The weighted average number of common shares outstanding is computed as follows (in thousands):



|                                                               |  |                         |        |      |   |        |  |   |       
|-------------------------------------------------------------- |  | ----------------------- | ------ | ---- | - | ------ |  | - | ------
|                                                               |  | Year Ended December 31,
|                                                               |  | 2007                    |        | 2006 |   | 2005  
|Numerator for net income per Class A and Class B common stock: |  |                         |        |      |   |        |  |   |       
|Net income                                                     |  | $                       | 67,207 |      | $ | 50,701 |  | $ | 44,193
|                                                               |  |                         |       
|Numerator for basic net income Class A common stock            |  | $                       | 38,777 |      | $ | 27,913 |  | $ | 23,915
|Numerator for basic net income Class B common stock            |  | $                       | 28,430 |      | $ | 22,788 |  | $ | 20,278
|                                                               |  |                         |       
|Numerator for diluted net income Class A common stock          |  | $                       | 39,122 |      | $ | 28,211 |  | $ | 24,184
|Numerator for diluted net income Class B common stock          |  | $                       | 28,085 |      | $ | 22,490 |  | $ | 20,009
|                                                               |  |                         |       
|Basic weighted average common shares outstanding               |  |                         |        |      |   |        |  |   |       
|Class A common stock                                           |  |                         | 19,683 |      |   | 18,450 |  |   | 17,767
|Class B common stock                                           |  |                         | 14,431 |      |   | 15,062 |  |   | 15,065
|                                                               |  |                         |       
|Effect of potential exercise of stock options                  |  |                         |        |      |   |        |  |   |       
|Class A common stock                                           |  |                         | 419    |      |   | 443    |  |   | 441   
|Class B common stock                                           |  |                         |       |      |   |       |  |   |      
|                                                               |  |                         |        |      |   |        |  |   |       
|Diluted weighted average common shares outstandingClass A     |  |                         | 20,102 |      |   | 18,893 |  |   | 18,208
|                                                               |  |                         |        |      |   |        |  |   |       
|Diluted weighted average common shares outstandingClass B     |  |                         | 14,431 |      |   | 15,062 |  |   | 15,065
|                                                               |  |                         |        |      |   |        |  |   |       

For the years ended December 31, 2007 and 2006, options to purchase 671 thousand and
602 thousand shares, respectively, weighted for the portion of the period in which they were outstanding, were outstanding but not included in the computation of diluted earnings per share because the options effect would have been
anti-dilutive. For the years ended December 31, 2007 and 2006, shares issued from the exercise of stock options were 635 thousand and 874 thousand, respectively.

5. Revenues and Receivables

We deliver a broad array of information technology and technical
services solutions under contracts with the U.S. government, state and local governments, and commercial customers. Revenues from the U.S. government under prime contracts and subcontracts, as compared to total contract revenues, were approximately
97.7%, 97.8% and 98.0% for the years ended December 31, 2007, 2006 and 2005, respectively. The components of contract receivables are as follows (in thousands):



|                                                                           |  |                        |         |   |      |   |         |  
|-------------------------------------------------------------------------- |  | ---------------------- | ------- | - | ---- | - | ------- | -
|                                                                           |  | Year endedDecember 31, |        
|                                                                           |  | 2007                   |         |   | 2006 |  
|Billed receivables                                                         |  | $                      | 298,059 |   |      | $ | 211,564 |  
|Unbilled receivables:                                                      |  |                        |         |   |      |   |         |  
|Amounts billable                                                           |  |                        | 32,194  |   |      |   | 21,911  |  
|Revenues recorded in excess of funding                                     |  |                        | 7,792   |   |      |   | 2,832   |  
|Revenues recorded in excess of milestone billings on fixed price contracts |  |                        | 3,448   |   |      |   | 3,976   |  
|Retainage                                                                  |  |                        | 2,127   |   |      |   | 1,680   |  
|Allowance for doubtful accounts                                            |  |                        | (6,153  | ) |      |   | (5,518  | )
|                                                                           |  |                        |         |   |      |   |         |  
|                                                                           |  | $                      | 337,467 |   |      | $ | 236,445 |  
|                                                                           |  |                        |         |   |      |   |         |  



64



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Amounts billable consist principally of amounts to be billed within the next month. Revenues recorded
in excess of funding are billable upon receipt of contractual amendments or other modifications. Revenues recorded in excess of milestone billings on fixed price contracts consist of amounts not expected to be billed within the next month. The
retainage is billable upon completion of the contract performance and approval of final indirect expense rates by the government. Accounts receivable at December 31, 2007, are expected to be substantially collected in 2008 except for
approximately $2.3 million.

6. Property and Equipment

Major classes of property and equipment are summarized as follows (in thousands):



|                                                |  |              |         |   |      |   |         |  
|----------------------------------------------- |  | ------------ | ------- | - | ---- | - | ------- | -
|                                                |  | December 31, |        
|                                                |  | 2007         |         |   | 2006 |  
|Furniture and equipment                         |  | $            | 23,916  |   |      | $ | 24,607  |  
|Land and buildings                              |  |              |        |   |      |   | 2,010   |  
|Leasehold improvements                          |  |              | 13,543  |   |      |   | 10,614  |  
|                                                |  |              |         |   |      |   |         |  
|                                                |  |              | 37,459  |   |      |   | 37,231  |  
|Less: Accumulated depreciation and amortization |  |              | (23,289 | ) |      |   | (23,350 | )
|                                                |  |              |         |   |      |   |         |  
|                                                |  | $            | 14,170  |   |      | $ | 13,881  |  
|                                                |  |              |         |   |      |   |         |  

Depreciation and amortization expense relating to property and equipment for the years ended
December 31, 2007, 2006 and 2005 was $3.6 million, $3.1 million, and $3.0 million, respectively.

7. Goodwill and Other Intangibles

SFAS No. 142, Goodwill and Other Intangible Assets requires, among other things, the discontinuance of goodwill amortization. Under SFAS
142, goodwill is to be reviewed at least annually for impairment; we have elected to perform this review annually during the second quarter each calendar year. These reviews have resulted in no adjustments in goodwill for continuing operations.

The changes in the carrying amounts of goodwill during 2007 and 2006 are as follows (in thousands):



|                                                                    |  |   |         |   |                 |   |         |  
|------------------------------------------------------------------- |  | - | ------- | - | --------------- | - | ------- | -
|                                                                    |  |   |         |   | Goodwillbalance |  
|December 31, 2005                                                   |  |   |         |   |                 | $ | 237,854 |  
|Less: Accumulated amortization (pre adoption of SFAS 142)           |  |   |         |   |                 |   | (10,107 | )
|                                                                    |  |   |         |   |                 |   |         |  
|Net amount at December 31, 2005                                     |  |   |         |   |                 |   | 227,747 |  
|Acquisition-GRS Solutions, Inc.                                     |  | $ | 11,553  |   |                 |   |         |  
|Goodwill of NetWitness® business sold                               |  |   | (978    | ) |                 |   | 10,575  |  
|                                                                    |  |   |         |   |                 |   |         |  
|Net amount at December 31, 2006                                     |  |   |         |   |                 | $ | 238,322 |  
|Acquisition-SRS Technologies                                        |  | $ | 150,345 |   |                 |   |         |  
|Acquisition-McDonald Bradley, Inc.                                  |  |   | 62,965  |   |                 |   |         |  
|Additional consideration for the acquisition of GRS Solutions, Inc. |  |   | 200     |   |                 |   | 213,510 |  
|                                                                    |  |   |         |   |                 |   |         |  
|Net amount at December 31, 2007                                     |  |   |         |   |                 | $ | 451,832 |  
|                                                                    |  |   |         |   |                 |   |         |  



65



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Intangible assets consisted of the following (in thousands):



|                                           |  |                   |         |                         |   |                    |  |               |        |                         |   |                    |  |   |        |  |   |       
|------------------------------------------ |  | ----------------- | ------- | ----------------------- | - | ------------------ |  | ------------- | ------ | ----------------------- | - | ------------------ |  | - | ------ |  | - | ------
|                                           |  | December 31, 2007 |         | December 31, 2006      
|                                           |  | GrossCarrying     |         | AccumulatedAmortization |   | Net CarryingAmount |  | GrossCarrying |        | AccumulatedAmortization |   | Net CarryingAmount
|Amortized intangible assets:               |  |                   |         |                         |   |                    |  |               |        |                         |   |                    |  |   |        |  |   |       
|Contract and program intangibles           |  | $                 | 96,240  |                         | $ | 20,265             |  | $             | 75,975 |                         | $ | 45,115             |  | $ | 13,560 |  | $ | 31,555
|Capitalized software cost for sale         |  |                   | 11,672  |                         |   | 10,430             |  |               | 1,242  |                         |   | 12,150             |  |   | 9,179  |  |   | 2,971 
|Capitalized software cost for internal use |  |                   | 13,699  |                         |   | 7,997              |  |               | 5,702  |                         |   | 12,101             |  |   | 6,447  |  |   | 5,654 
|Other                                      |  |                   | 57      |                         |   |                   |  |               | 57     |                         |   |                   |  |   |       |  |   |      
|                                           |  |                   |         |                         |   |                    |  |               |        |                         |   |                    |  |   |        |  |   |       
|                                           |  | $                 | 121,668 |                         | $ | 38,692             |  | $             | 82,976 |                         | $ | 69,366             |  | $ | 29,186 |  | $ | 40,180
|                                           |  |                   |         |                         |   |                    |  |               |        |                         |   |                    |  |   |        |  |   |       

Aggregate amortization expense relating to intangible assets for the years ended December 31,
2007, 2006, and 2005 was $10.1 million, $6.9 million and $5.6 million, respectively. Amortization expense for the year ended December 31, 2007 includes a write down of an acquisition related intangible asset for internally developed software of
$0.9 million. The write down was based on a change in the estimated net realizable value of the asset. We estimate that we will have the following amortization expense for the future periods indicated below (in thousands):



|                  |  |   |       
|----------------- |  | - | ------
|Year ending:      |  |   |       
|December 31, 2008 |  | $ | 12,224
|December 31, 2009 |  | $ | 10,902
|December 31, 2010 |  | $ | 9,177 
|December 31, 2011 |  | $ | 6,219 
|December 31, 2012 |  | $ | 5,032 

8. Debt



|                                                      |  |              |         |      |   |  
|----------------------------------------------------- |  | ------------ | ------- | ---- | - | -
|                                                      |  | December 31,
|                                                      |  | 2007         |         | 2006
|Borrowings consisted of the following (in thousands): |  |              |         |      |   |  
|Revolving credit facility                             |  | $            | 165,000 |      | $ | 
|Less: Current portion of debt                         |  |              | 126,000 |      |   | 
|                                                      |  |              |         |      |   |  
|Debtnet of current portion                           |  | $            | 39,000  |      | $ | 
|                                                      |  |              |         |      |   |  

On April 30, 2007, we terminated our credit facility with a syndicate of lenders led by
Citizens Bank of Pennsylvania, as administrative agent (see below), and executed a new revolving credit agreement with a syndicate of lenders led by Bank of America, N.A, as administrative agent (the New Credit Agreement). The New Credit
Agreement allows for greater available capital to help fund future acquisitions and growth. We expensed the remaining unamortized deferred debt expense of $0.2 million on April 30, 2007. The New Credit Agreement provides for a $300.0 million
revolving credit facility, with a $25.0 million letter of credit sublimit and a $30.0 million swing line loan sublimit. The New Credit Agreement also contains an accordion feature that permits the Company to arrange with the lenders for them to
provide up to $100.0 million in additional commitments. We incurred $1.4 million in financing cost related to the New Credit Agreement, which has been deferred and will be amortized over the term of the agreement. The maturity date for the New
Credit Agreement is April 30, 2012.



66



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Borrowings under the New Credit Agreement are collateralized by our assets and bear interest at one
of the following rates as selected by the Company: a LIBOR-based rate plus market-rate spreads that are determined based on a company leverage ratio calculation (0.875% to 1.5%), or the lenders base rate, which is the lower of the Federal
Funds Rate plus 0.5% or Bank of Americas prime lending rate. At December 31, 2007, the borrowing rate on our outstanding debt was 3.56%. The aggregate annual weighted average interest rates were 3.53% and 4.14% for 2007 and 2006,
respectively.

The terms of the New Credit Agreement permit prepayment and termination of the loan commitments at any time, subject to
certain conditions. The New Credit Agreement requires the Company to comply with specified financial covenants, including the maintenance of a certain leverage ratio and fixed charge coverage ratio. The New Credit Agreement also contains various
covenants, including affirmative covenants with respect to certain reporting requirements and maintaining certain business activities, and negative covenants that, among other things, may limit our ability to incur liens, incur additional
indebtedness, make investments, make acquisitions, pay cash dividends, and undertake certain additional actions. As of, and during, December 31, 2007 and 2006, we were in compliance with our financial covenants under the New Credit agreement as
well as the prior credit facility with Citizens Bank.

The total interest paid was $5.0 million, $2.3 million, and $3.5 million for the
years ended December 31, 2007, 2006 and 2005, respectively.

We had $165 million outstanding on our credit facility at
December 31, 2007 and no outstanding borrowings at December 31, 2006. The weighted average borrowings under the revolving portion of the facility during the years ended December 31, 2007 and 2006 were $84.7 million and $28.4 million,
respectively. The maximum additional available borrowing under the credit facility at December 31, 2007 was $134.3 million. As of December 31, 2007 and 2006, we were contingently liable under letters of credit totaling $0.7 million and
$0.8 million, respectively which reduces our availability to borrow under our credit facility.

Debt outstanding at December 31, 2007,
is estimated to be repaid, by the following calendar year ends: $126.0 million in 2008 and $39.0 million in 2009. Borrowings on the credit facility are due on the maturity date of the credit agreement, April 30, 2012.

In 2006, we maintained a Credit and Security Agreement with Citizens Bank of Pennsylvania which we terminated in April 2007. The agreement initially
provided for a $125 million credit facility that could be increased to $200 million. The maturity date of the agreement was February 25, 2009. The maximum available borrowing under the revolving credit facility at December 31, 2006 was
$124.2 million. Borrowings under the Agreement were collateralized by our eligible contract receivables, inventory, all of our stock in certain of our subsidiaries and certain property and equipment, and bore interest at the agreed-upon London
Inter-Bank Offer Rate (LIBOR) plus 1.00% or the lenders prime rate, plus market-rate spreads that were determined based on a company leverage ratio calculation.

9. Commitments and Contingencies

Payments to us on cost-reimbursable contracts with the U.S.
government are provisional payments subject to adjustment upon audit by the DCAA. The majority of audits through 2002, 2003, and 2004 have been completed and resulted in no material adjustments. The audits for 2002 through 2007 are not expected to
have a material effect on the results of future operations.

In the normal course of business, we are involved in certain governmental and
legal proceedings, claims and disputes, and have litigation pending under several suits. We believe that the ultimate resolution of these matters will not have a material effect on our financial position, results of operations, or cash flows.



67



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



We lease office space and equipment under long-term operating leases. A number of the leases contain
renewal options and escalation clauses. At December 31, 2007, aggregate future minimum rental commitments under these leases are as follows (in thousands):



|                  |  |              |         |           |   |       |  |   |        
|----------------- |  | ------------ | ------- | --------- | - | ----- |  | - | -------
|                  |  | Office Space |         | Equipment |   | Total
|Year ending:      |  |              |         |           |   |       |  |   |        
|December 31, 2008 |  | $            | 22,305  |           | $ | 6,338 |  | $ | 28,643 
|December 31, 2009 |  |              | 20,515  |           |   | 1,823 |  |   | 22,338 
|December 31, 2010 |  |              | 18,167  |           |   | 562   |  |   | 18,729 
|December 31, 2011 |  |              | 15,188  |           |   | 154   |  |   | 15,342 
|December 31, 2012 |  |              | 12,350  |           |   | 12    |  |   | 12,362 
|Thereafter        |  |              | 13,860  |           |   |      |  |   | 13,860 
|                  |  |              |         |           |   |       |  |   |        
|Total             |  | $            | 102,385 |           | $ | 8,889 |  | $ | 111,274
|                  |  |              |         |           |   |       |  |   |        

Office space and equipment rent expense totaled approximately $33.0 million, $28.0 million and
$24.0 million for the years ended December 31, 2007, 2006 and 2005, respectively.

We had $6.3 million and $4.1 million of deferred
rent liabilities resulting from recording rent expense on a straight-line basis over the life of the respective lease in accordance with SFAS No. 13, Accounting for Leases, and FASB Technical Bulletin No. 85-3, Accounting for
Operating Leases with Scheduled Rent Increases, for the years ended 2007 and 2006, respectively.

10. Stockholders Equity and Stock Options

Common StockWe have 150,000,000 shares of authorized Class A common stock, par value $0.01 per share. We have
50,000,000 shares of authorized Class B common stock, par value $0.01 per share. On December 31, 2007, there were 20,231,339 shares of Class A common stock outstanding, 243,040 shares of Class A common stock recorded as treasury
stock, and 14,279,813 shares of Class B common stock outstanding.

Holders of Class A common stock are entitled to one vote for each
share held of record, and holders of Class B common stock are entitled to ten votes for each share held of record, except with respect to any going private transaction (generally, a transaction in which George J. Pedersen (our Chairman
of the Board and Chief Executive Officer), his affiliates, his direct and indirect permitted transferees or a group, generally including Mr. Pedersen, such affiliates and permitted transferees, seek to buy all outstanding shares), as to which
each share of Class A common stock and Class B common stock are entitled to one vote per share. The Class A common stock and the Class B common stock vote together as a single class on all matters submitted to a vote of stockholders,
including the election of directors, except as required by law. Holders of common stock do not have cumulative voting rights in the election of directors.

Stockholders are entitled to receive, when and if declared by the board of directors from time to time, such dividends and other distributions in cash, stock or property from our assets or funds legally available for
such purposes subject to any dividend preferences that may be attributable to preferred stock that may be authorized. Each share of Class A common stock and Class B common stock is equal in respect of dividends and other distributions in cash,
stock or property, except that in the case of stock dividends, only shares of Class A common stock will be distributed with respect to the Class A common stock and only shares of Class B common stock will be distributed with respect to
Class B common stock. In no event will either Class A common stock or Class B common stock be split, divided or combined unless the other class is proportionately split, divided or combined.



68



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



The shares of Class A common stock are not convertible into any other series or class of
securities. Each share of Class B common stock, however, is freely convertible into one share of Class A common stock at the option of the Class B stockholder. Upon the death or permanent mental incapacity of the Mr. Pedersen, all
outstanding shares of Class B common stock automatically convert to Class A common stock.

Preferred StockWe are
authorized to issue an aggregate of 20,000,000 shares of preferred stock, $0.01 par value per share, the terms and conditions of which are determined by our board of directors upon issuance. The rights, preferences and privileges of holders of our
common stock are subject to, and may be adversely affected by, the rights of holders of any shares of preferred stock that we may designate and issue in the future. At December 31, 2007 and 2006, no shares of preferred stock are outstanding and
the Board of Directors currently has no plans to issue a series of preferred stock.

Shares Held in Grantor TrustAt
December 31, 2006 there were 609,296 shares of Class B common stock, with a cost value of $0.6 million, reflected in equity in accordance with EITF 97-14, Accounting for Deferred Compensation Arrangements where Amounts Earned are Held
in a Rabbi Trust and Invested. These shares were held in a Rabbi Trust to satisfy a defined contribution pension obligation, to be paid in stock for the benefit of Mr. Pedersen.

On January 8, 2007, Mr. Pedersen received a distribution of 609,296 shares of Class B Common Stock, which had been held by the ManTech
International Corporation Supplemental Executive Retirement Plan for the benefit of George J. Pedersen (GJP SERP). The Class B Common Stock is convertible into Class A Common Stock at any time on a one-for-one basis, and has no expiration date.
On January 8, 2007, Mr. Pedersen converted 243,040 shares of Class B Common Stock to 243,040 shares of Class A Common Stock to satisfy tax withholding requirements.

The converted shares were surrendered to the Company to pay taxes applicable to the distribution of all GJP SERP shares on Mr. Pedersens
behalf. The taxes have been paid, and the shares have been accounted for as treasury stock on our consolidated balance sheet, using the cost method, at a value of $9.1 million. In addition, we recognized an $8.6 million tax benefit on the
distribution from the trust. The tax benefit was recorded to additional paid-in capital and is reported as a cash inflow from financing activities on our statement of cash flows.

Accounting for Stock-Based Compensation:

Stock OptionsIn June 2006, the
Companys stockholders approved our 2006 Management Incentive Plan (the Plan), which was designed to enable us to attract, retain and motivate key employees. The Plan amended and restated the Companys Management Incentive Plan that was
approved by the Companys stockholders prior to the initial public offering in 2002 (the 2002 Plan). In connection with the creation of the Plan, all options outstanding under the 2002 Plan and the ManTech International Corporation 1995
Long-Term Incentive Plan were assumed. Awards granted under the Plan are settled in shares of Class A common stock. At the beginning of each year, the Plan provides that the number of shares available for issuance automatically increases by an
amount equal to one and one-half percent of the total number of shares of Class A and Class B common stock outstanding on December 31st of the previous year. On January 2, 2008, 517,667 additional shares were made available for
issuance under the Plan. The Plan also authorized the issuance of an additional 1,500,000 shares in addition to the shares authorized under the 2002 Plan. Through December 31, 2007, the aggregate number of shares of our common stock authorized
for issuance under the Plan was 6,794,982. Through December 31, 2007, 2,421,969 shares of our Class A common stock have been issued as a result of the exercise of the options granted under the Plan. The Plan expires in June 2016.



69



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



The Plan is administered by the compensation committee of our board of directors, along with its
delegates. Subject to the express provisions of the Plan, the committee has broad authority to administer and interpret the Plan, including the discretion to determine the exercise price, vesting schedule, contractual life and the number of shares
to be issued.

We typically issue options that vest in three equal installments, beginning on the first anniversary of the date of grant.
Prior to January 1, 2006, we typically issued options under the 2002 Plan that expired ten years after the date of grant. Under the terms of the Plan, the contractual life of the option grants may not exceed eight years. During the years ended
December 31, 2007 and 2006, we issued options that expire five years from the date of grant. The Company expects that it will continue to issue options that expire five years from the date of grant for the foreseeable future.

Stock Compensation ExpenseEffective January 1, 2006, we adopted FASB SFAS No. 123 (revised 2004), Share-Based
Payment, using the modified prospective method. Under this method, compensation costs for all awards granted after the date of adoption and the unvested portion of previously granted awards are measured at an estimated fair value and included in
operating expenses or capitalized as appropriate over the period in which an employee provides service in exchange for the award. For the years ended December 31, 2007, 2006 and 2005, we recorded $6.7 million, $5.8 million, and $18 thousand of
stock-based compensation cost, respectively. No compensation expense for employees with stock options, including stock-based compensation expense, was capitalized during the periods. As of December 31, 2007, there was $10.6 million of
unrecognized compensation cost related to share-based compensation arrangements that we expect to vest. The weighted-average period over which expense is expected to be recognized is 1.8 years.

Prior to the adoption of SFAS No. 123R, we reported tax benefits from the exercise of stock options as an operating cash flow in the consolidated
statement of cash flows. In the period beginning January 1, 2006, excess tax benefits from the exercise of stock options are presented as a cash inflow from financing activities. For the years ended December 31, 2007, 2006 and 2005, total
recognized tax benefits from the exercise of stock options were $2.7 million, $4.4 million and $1.9 million, respectively.

In 2005, as
permitted under SFAS No. 123,Accounting for Stock-Based Compensation, we accounted for our stock-based compensation plan using the intrinsic value method under the recognition and measurement principles of APB Opinion No. 25. The
following table illustrates the effect on net income and earnings per share if we had applied the fair value recognition provisions of SFAS No. 123 to stock-based employee compensation for the year ended December 31, 2005.



|                                                                                                                                     |  |                             |        |  
|------------------------------------------------------------------------------------------------------------------------------------ |  | --------------------------- | ------ | -
|(in thousands except per share amounts)                                                                                              |  | Year EndedDecember 31, 2005 |       
|Net income, as reported                                                                                                              |  | $                           | 44,193 |  
|Add: stock-based compensation, net of tax, included in net income as reported                                                        |  |                             | 11     |  
|Deduct: stock-based employee compensation expense determined under fair value based method for all awardsnet of related tax
effects |  |                             | (3,157 | )
|                                                                                                                                     |  |                             |        |  
|Pro forma net income                                                                                                                 |  | $                           | 41,047 |  
|                                                                                                                                     |  |                             |        |  
|Earnings per share:                                                                                                                  |  |                             |        |  
|Basic Class A and Class Bas reported                                                                                                |  | $                           | 1.35   |  
|Basic Class A and Class Bpro forma                                                                                                  |  | $                           | 1.25   |  
|Diluted Class A and Class Bas reported                                                                                              |  | $                           | 1.33   |  
|Diluted Class A and Class Bpro forma                                                                                                |  | $                           | 1.23   |  



70



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Fair Value Determination We have used the Black-Scholes-Merton option pricing
model to determine fair value of our awards on date of grant. We will reconsider the use of the Black-Scholes-Merton model if additional information becomes available in the future that indicates another model would be more appropriate, or if grants
issued in future periods have characteristics that cannot be reasonably estimated under this model.

The following weighted-average
assumptions were used for option grants during the years ended December 31, 2007, 2006 and 2005:

Expected Volatility.The
expected volatility of the options granted was estimated based upon historical volatility of the Companys share price through weekly observations of the Companys trading history. Prior to 2006, the expected volatility was estimated based
upon historical volatility of the Companys shares through monthly observations of the Companys trading history.

Expected
Term. The expected term of options granted to employees during 2007 was determined from historical exercises of the grantee population. Due to a lack of historical exercise data, the expected term of option grants to our board of directors
during 2007 and all grants in 2006 was determined under the simplified calculation provided SECs Staff Accounting Bulletin No. 107 ((vesting term + original contractual term)/2). For all grants valued during 2007 and 2006, the options had
graded vesting over 3 years (33.3% of the options in each grant vest annually) and the contractual term was 5 years. Prior to 2006, we estimated the expected term to be 3 years.

Risk-free Interest Rate.The yield on zero-coupon U.S. Treasury strips was used to extrapolate a forward-yield curve. This term
structure of future interest rates was then input into a numeric model to provide the equivalent risk-free rate to be used in the Black-Scholes-Merton model based on expected term of the underlying grants. Prior to 2006, the rate was
determined using an implied yield available on U.S. Treasury note with a term equal to the expected life of the underlying grant.

Dividend Yield. The Black-Scholes-Merton valuation model requires an expected dividend yield as an input. We have not issued dividends in the past nor do we expect to issue dividends in the future. As such, the dividend yield used in
our valuations for all years presented was zero.

The following table summarizes weighted-average assumptions used in our calculations of
fair value for the years ended December 31, 2007, 2006 and 2005:



|                                    |  |                         |   |  |       |   |  |       |  
|----------------------------------- |  | ----------------------- | - |  | ----- | - |  | ----- | -
|                                    |  | Year Ended December 31, |  
|                                    |  | 2007                    |   |  | 2006  |   |  | 2005  |  
|Dividend yield                      |  | 0.00                    | % |  | 0.00  | % |  | 0.00  | %
|Volatility                          |  | 35.62                   | % |  | 41.99 | % |  | 44.90 | %
|Risk-free interest rate             |  | 4.27                    | % |  | 4.68  | % |  | 3.87  | %
|Expected life of options (in years) |  | 3.10                    |   |  | 3.50  |   |  | 3.00  |  

Stock Option ActivityDuring the year ended December 31, 2007, we granted
stock options to purchase 796,000 shares of class A common stock at a weighted-average exercise price of $36.41 per share, which reflects the fair market value of the shares on the date of grant. The weighted-average fair value of options granted
during the years ended December 31, 2007, 2006, and 2005 as determined under the Black-Scholes-Merton valuation model, was $11.55, $11.13, and $8.68, respectively. These options vest in 3 equal installments over 3 years and have a contractual
term of 5 years. Option grants that vested during the years ended December 31, 2007, 2006, and 2005 had a combined fair value of $6.0 million, $4.9 million, and $4.8 million, respectively.



71



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



Information with respect to stock option activity and stock options outstanding at December 31,
2007, 2006 and 2005, was as follows:



|                                       |  |                 |   |  |                               |       |                                       |   |       
|-------------------------------------- |  | --------------- | - |  | ----------------------------- | ----- | ------------------------------------- | - | ------
|                                       |  | Number ofShares |   |  | WeightedAverageExercise Price |       | AggregateIntrinsicValue(in thousands)
|Shares under option, December 31, 2004 |  | 2,673,590       |   |  | $                             | 18.56 |                                       |   |       
|Options granted                        |  | 709,600         |   |  | $                             | 25.29 |                                       |   |       
|Options exercised                      |  | (540,277        | ) |  | $                             | 17.59 |                                       | $ | 5,224 
|Options cancelled and expired          |  | (132,171        | ) |  | $                             | 20.24 |                                       |   |       
|                                       |  |                 |   |  |                               |       |                                       |   |       
|Shares under option, December 31, 2005 |  | 2,710,742       |   |  | $                             | 20.38 |                                       |   |       
|Options granted                        |  | 609,500         |   |  | $                             | 30.61 |                                       |   |       
|Options exercised                      |  | (874,301        | ) |  | $                             | 19.20 |                                       | $ | 12,666
|Options cancelled and expired          |  | (190,822        | ) |  | $                             | 24.92 |                                       |   |       
|                                       |  |                 |   |  |                               |       |                                       |   |       
|Shares under option, December 31, 2006 |  | 2,255,119       |   |  | $                             | 21.00 |                                       |   |       
|Options granted                        |  | 796,000         |   |  | $                             | 36.41 |                                       |   |       
|Options exercised                      |  | (635,471        | ) |  | $                             | 20.57 |                                       | $ | 14,772
|Options cancelled and expired          |  | (114,406        | ) |  | $                             | 27.33 |                                       |   |       
|                                       |  |                 |   |  |                               |       |                                       |   |       
|Shares under option, December 31, 2007 |  | 2,301,242       |   |  | $                             | 28.30 |                                       | $ | 35,717
|                                       |  |                 |   |  |                               |       |                                       |   |       

The following table summarizes nonvested stock options for the year ended December 31, 2007:



|                                                 |  |                 |   |  |                           |      
|------------------------------------------------ |  | --------------- | - |  | ------------------------- | -----
|                                                 |  | Number ofShares |   |  | WeightedAverageFair Value
|                                                 | 
|Nonvested stock options at December 31, 2006     |  | 1,376,057       |   |  | $                         | 8.91 
|Options granted                                  |  | 796,000         |   |  | $                         | 11.55
|Vested during period                             |  | (762,497        | ) |  | $                         | 7.85 
|Options cancelled                                |  | (101,066        | ) |  | $                         | 9.89 
|                                                 |  |                 |   |  |                           |      
|Nonvested shares under option, December 31, 2007 |  | 1,308,494       |   |  | $                         | 11.04
|                                                 |  |                 |   |  |                           |      

Information concerning stock options exercisable and stock options expected to vest at
December 31, 2007:



|                                         |  |                    |  |                                                 |  |                               |       |                                        |   |       
|---------------------------------------- |  | ------------------ |  | ----------------------------------------------- |  | ----------------------------- | ----- | -------------------------------------- | - | ------
|                                         |  | OptionsExercisable |  | WeightedAverageRemainingContractual Life(years) |  | WeightedAverageExercise Price |       | AggregateIntrinsic Value(in thousands)
|                                         |  |                    | 
|                                         |  |                    | 
|                                         |  |                    | 
|                                         |  |                    | 
|Stock options exercisable                |  | 992,748            |  | 5.9                                             |  | $                             | 21.65 |                                        | $ | 22,013
|Stock options expected to vest           |  | 1,170,510          |  | 4.5                                             |  | $                             | 33.08 |                                        | $ | 12,576
|                                         |  |                    |  |                                                 |  |                               |       |                                        |   |       
|Options exercisable and expected to vest |  | 2,163,258          |  |                                                 |  |                               |       |                                        |   |       
|                                         |  |                    |  |                                                 |  |                               |       |                                        |   |       



72



---

MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



11. Retirement Plans

We maintain nonqualified supplemental defined benefit pension plans for certain retired employees of an acquired company. The weighted average assumptions used in accounting for our pension plans in 2007, 2006 and
2005 were as follows:



|                               |  |      |   |  |      |   |  |      |  
|------------------------------ |  | ---- | - |  | ---- | - |  | ---- | -
|                               |  | 2007 |   |  | 2006 |   |  | 2005 |  
|Discount Rate                  |  | 5.75 | % |  | 5.75 | % |  | 5.50 | %
|Expected return on plan assets |  | N/A  |   |  | N/A  |   |  | N/A  |  
|Rate of compensation increase  |  | N/A  |   |  | N/A  |   |  | N/A  |  

The discount rate is the estimated rate at which the obligation for pension benefits could
effectively be settled. The plans were informally and partially funded beginning in 1999 via a rabbi trust. Per FASB 132, assets held in a rabbi trust are not eligible to be included in the calculation of plan status. At both December 31, 2007
and 2006, 100 percent of the rabbi trust assets were invested in a money market account with a commercial bank. The rate of compensation increase is not applicable as all covered employees had retired prior to 1998.

The following table sets forth the status of the plans (in thousands):



|                                                 |  |                         |        |   |      |   |        |  
|------------------------------------------------ |  | ----------------------- | ------ | - | ---- | - | ------ | -
|                                                 |  | Year Ended December 31, |       
|                                                 |  | 2007                    |        |   | 2006 |  
|Change in benefit obligation:                    |  |                         |        |   |      |   |        |  
|Benefit obligation at beginning of period        |  | $                       | 1,885  |   |      | $ | 1,974  |  
|Interest cost                                    |  |                         | 105    |   |      |   | 105    |  
|Actuarial loss (gain)                            |  |                         | 54     |   |      |   | (6     | )
|Benefits paid                                    |  |                         | (185   | ) |      |   | (188   | )
|                                                 |  |                         |        |   |      |   |        |  
|Benefit obligation at end of period              |  |                         | 1,859  |   |      |   | 1,885  |  
|                                                 |  |                         |        |   |      |   |        |  
|Change in plan assets:                           |  |                         |        |   |      |   |        |  
|Fair value of plan assets at beginning of period |  |                         |       |   |      |   |       |  
|Employer contribution                            |  |                         | 185    |   |      |   | 188    |  
|Investment income                                |  |                         |       |   |      |   |       |  
|Benefits paid                                    |  |                         | (185   | ) |      |   | (188   | )
|                                                 |  |                         |        |   |      |   |        |  
|Fair value of plan assets at end of period       |  |                         |       |   |      |   |       |  
|                                                 |  |                         |        |   |      |   |        |  
|Funded status at end of period                   |  |                         | (1,859 | ) |      |   | (1,885 | )
|Unrecognized actuarial loss                      |  |                         | 206    |   |      |   | 152    |  
|Unrecognized prior-service cost                  |  |                         |       |   |      |   |       |  
|                                                 |  |                         |        |   |      |   |        |  
|Net amount recognized at end of period           |  | $                       | (1,653 | ) |      | $ | (1,733 | )
|                                                 |  |                         |        |   |      |   |        |  

The components of net periodic pension cost for the Companys defined benefit plans are
provided in the following table (in thousands):



|                                                                 |  |                         |     |      |   |      |  |   |    
|---------------------------------------------------------------- |  | ----------------------- | --- | ---- | - | ---- |  | - | ---
|                                                                 |  | Year Ended December 31,
|                                                                 |  | 2007                    |     | 2006 |   | 2005
|Interest cost on projected benefit obligation                    |  | $                       | 105 |      | $ | 105  |  | $ | 109
|Net amortization of prior-service cost and transition obligation |  |                         | 1   |      |   | 28   |  |   | 23 
|                                                                 |  |                         |     |      |   |      |  |   |    
|Net periodic pension cost                                        |  | $                       | 106 |      | $ | 133  |  | $ | 132
|                                                                 |  |                         |     |      |   |      |  |   |    



73



---

MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



The following table sets forth our estimated future benefit payments under our plans (in thousands):



|                              |  |   |      
|----------------------------- |  | - | -----
|For years ending December 31: |  |  
|2008                          |  | $ | 186  
|2009                          |  | $ | 175  
|2010                          |  | $ | 172  
|2011                          |  | $ | 156  
|2012                          |  | $ | 150  
|Thereafter                    |  | $ | 1,020

In the fourth quarter of 2006, we adopted SFAS No. 158. Upon adoption, we increased our
deferred income tax asset for pensions by $59 thousand to $832 thousand, increased our liability for pension benefits by $136 thousand to $1.9 million, and recorded $93 thousand, net of taxes, to other comprehensive income.

We maintain four qualified defined contribution plans. Our qualified plans cover substantially all employees, which comply with Section 401 of the
Internal Revenue Code. Under these plans, we stipulated a basic matching contribution that matches a portion of the participants contribution based upon a defined schedule. Contributions are invested by an independent investment company in one
or more of several investment alternatives. The choice of investment alternatives is at the election of each participating employee. Additionally, we maintain two discretionary contribution plans. Annual contributions are at the discretion of the
Company and are based on a percentage of eligible employees compensation. Employees do contribute to these discretionary plans. Our contributions to the plans were approximately $16.4 million, $11.1 million and $7.5 million for the years ended
December 31, 2007, 2006 and 2005, respectively.

We maintained non-qualified defined contribution supplemental retirement plans for
certain key employees. Under these plans we accrued a stated annual amount which could also include interest at the greater of 10% or our annual rate of return on investments. We incurred expenses associated with these plans and contributed $50
thousand for the years ended December 31, 2006 and 2005. In 2007, these plans were terminated and no contributions were made. See Note 10-Stockholders Equity and Stock Options, Shares Held in Grantor Trust,for more detail
regarding the termination of one of these plans.

We also maintain two non-qualified deferred compensation plans for certain key employees.
Under these plans, eligible employees may defer up to 75% of qualified annual base compensation and 100% of bonus. Employee contributions to these plans were approximately $4.8 million, $3.3 million and $2.8 million for the years ended
December 31, 2007, 2006 and 2005, respectively.

On December 18, 1998, the board of directors approved the establishment of a
qualified Employee Stock Ownership Plan (ESOP), effective January 1, 1999, for the benefit of substantially all of our U.S. domestic-based employees. The ESOP is non-leveraged and will be funded entirely through Company contributions based on a
percentage of eligible employee compensation, as defined in the plan. Participants must be employees of the company or eligible Company subsidiaries and must meet minimum service requirements to be eligible for annual contributions. The ESOP
specifies a five-year vesting schedule over which participants become vested in the Class A common stock allocated to their participant account. The amount of our annual contribution to the ESOP is at the discretion of our board of directors.

For the years ended December 31, 2007, 2006 and 2005, we recorded $3.3 million, $2.6 million and $2.9 million, respectively, as
compensation expense related to ESOP contributions. Shares contributed to the ESOP in 2007, 2006 and 2005, were 76,011, 86,227, and 57,100, respectively, of Class A common stock. As of December 31, 2007 and 2006, we had contributed more
shares to the trust than are required to satisfy our annual contribution. As such, we had a balance in unearned ESOP shares of $0.3 million and $0.2 million at December 31, 2007 and 2006, respectively.



74



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



As required under SOP No. 93-6, Employers Accounting for Employee Stock Ownership
Plans, compensation expense is recorded for shares committed to be released to employees based on the fair market value of those shares in the period in which they are committed to be released. For the years ended December 31, 2007, 2006,
and 2005, new shares were issued to satisfy this obligation.

12. Income Taxes

For periods prior to the closing of our initial public offering on February 12, 2002, we accounted for earnings on a cash basis for federal income
tax purposes. Effective as of the closing of the initial public offering, we changed to the accrual method of accounting, resulting in previously deferred income being recognized for tax purposes. As such, taxes will be due with respect to the four
taxable years beginning with the taxable year of the offering. Because we previously recognized the deferred income for accounting purposes and accrued for the taxes, the change in tax status and the tax payments will not affect our earnings. The
tax effect of this change expired at December 31, 2005.

The domestic and foreign components of income before provision for income
taxes and minority interest; and without discontinued operations; but including equity method subsidiary investment earnings and gain on disposal; were as follows (in thousands):



|         |  |                         |         |   |      |   |        |  |   |       
|-------- |  | ----------------------- | ------- | - | ---- | - | ------ |  | - | ------
|         |  | Year Ended December 31,
|         |  | 2007                    |         |   | 2006 |   | 2005  
|Domestic |  | $                       | 110,189 |   |      | $ | 90,225 |  | $ | 85,749
|Foreign  |  |                         | (40     | ) |      |   | 196    |  |   | 1,623 
|         |  |                         |         |   |      |   |        |  |   |       
|         |  | $                       | 110,149 |   |      | $ | 90,421 |  | $ | 87,372
|         |  |                         |         |   |      |   |        |  |   |       

The provision for income taxes was comprised of the following components (in thousands), and
without discontinued operations:



|                                 |  |                         |        |   |      |   |        |      |  |   |        |  
|-------------------------------- |  | ----------------------- | ------ | - | ---- | - | ------ | ---- |  | - | ------ | -
|                                 |  | Year Ended December 31, |       
|                                 |  | 2007                    |        |   | 2006 |   |        | 2005 | 
|Current provision (benefit):     |  |                         |        |   |      |   |        |      |  |   |        |  
|Federal                          |  | $                       | 27,067 |   |      | $ | 26,992 |      |  | $ | 27,734 |  
|State                            |  |                         | 4,593  |   |      |   | 4,665  |      |  |   | 5,088  |  
|Foreign                          |  |                         | (5     | ) |      |   | 228    |      |  |   | 527    |  
|                                 |  |                         |        |   |      |   |        |      |  |   |        |  
|                                 |  |                         | 31,655 |   |      |   | 31,885 |      |  |   | 33,349 |  
|                                 |  |                         |        |   |      |   |        |      |  |   |        |  
|Deferred provision (benefit):    |  |                         |        |   |      |   |        |      |  |   |        |  
|Federal                          |  |                         | 137    |   |      |   | (1,192 | )    |  |   | (997   | )
|State                            |  |                         | (440   | ) |      |   | (231   | )    |  |   | (110   | )
|                                 |  |                         |        |   |      |   |        |      |  |   |        |  
|                                 |  |                         | (303   | ) |      |   | (1,423 | )    |  |   | (1,107 | )
|                                 |  |                         |        |   |      |   |        |      |  |   |        |  
|Other non-current provision:     |  |                         |        |   |      |   |        |      |  |   |        |  
|Federal                          |  |                         | 9,541  |   |      |   | 3,731  |      |  |   | 1,603  |  
|State                            |  |                         | 1,905  |   |      |   | 632    |      |  |   | 292    |  
|                                 |  |                         |        |   |      |   |        |      |  |   |        |  
|                                 |  |                         | 11,446 |   |      |   | 4,363  |      |  |   | 1,895  |  
|                                 |  |                         |        |   |      |   |        |      |  |   |        |  
|Total provision for income taxes |  | $                       | 42,798 |   |      | $ | 34,825 |      |  | $ | 34,137 |  
|                                 |  |                         |        |   |      |   |        |      |  |   |        |  

Net income tax (benefit) on discontinued operations was ($0.08) million, ($2.6) million and ($3.4)
million; and the effective tax rates were 41.3%, 35.0% and 27.30%; for the years ended December 31, 2007, 2006, and 2005, respectively.



75



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



The non-current provision for income tax for 2005 and 2006 represents amounts arising from the
exercise of stock options. For 2007, the non-current provision includes $2.7 million for exercise of stock options and $8.6 million for payment of a stock based SERP, both charged to equity; and $0.1 million related to FIN 48 liabilities.

The provision for income taxes varies from the amount of income tax determined by applying the applicable U.S. statutory tax rate to
pre-tax income, as a result of discontinued operations and the following:



|                                                            |  |                         |   |  |      |   |  |      |  
|----------------------------------------------------------- |  | ----------------------- | - |  | ---- | - |  | ---- | -
|                                                            |  | Year Ended December 31, |  
|                                                            |  | 2007                    |   |  | 2006 |   |  | 2005 |  
|Statutory U.S. Federal tax rate                             |  | 35.0                    | % |  | 35.0 | % |  | 35.0 | %
|Increase (decrease) in rate resulting from:                 |  |                         |   |  |      |   |  |      |  
|State taxesnet of Federal benefit                          |  | 3.6                     |   |  | 3.6  |   |  | 3.8  |  
|Foreign taxes                                               |  |                        |   |  | (0.1 | ) |  | (0.6 | )
|Adjustment to prior years Federal, state and foreign taxes |  | (0.3                    | ) |  | (0.3 | ) |  | (0.5 | )
|Nondeductible items:                                        |  |                         |   |  |      |   |  |      |  
|Meals and entertainment                                     |  | 0.3                     |   |  | 0.3  |   |  | 0.1  |  
|Goodwill amortization                                       |  |                        |   |  |     |   |  | 0.5  |  
|Compensation                                                |  | 0.4                     |   |  | (0.1 | ) |  | 0.6  |  
|Other, net                                                  |  | (0.1                    | ) |  | 0.1  |   |  | 0.2  |  
|                                                            |  |                         |   |  |      |   |  |      |  
|Effective tax rate                                          |  | 38.9                    | % |  | 38.5 | % |  | 39.1 | %
|                                                            |  |                         |   |  |      |   |  |      |  

The Company paid income taxes, net of refunds, of $31.3 million, $30.4 million, and $35.7 million
for the years ended December 31, 2007, 2006 and 2005, respectively.

Deferred income taxes arise from temporary differences between
the tax basis of assets and liabilities and their reported amounts in the financial statements. A summary of the tax effect of the significant components of deferred income taxes, without discontinued operation, follows (in thousands):



|                                                                    |  |              |         |   |      |   |         |  
|------------------------------------------------------------------- |  | ------------ | ------- | - | ---- | - | ------- | -
|                                                                    |  | December 31, |        
|                                                                    |  | 2007         |         |   | 2006 |  
|Gross deferred tax liabilities:                                     |  |              |         |   |      |   |         |  
|Unbilled receivables                                                |  | $            | 7,191   |   |      | $ | 3,500   |  
|Goodwill and other assets                                           |  |              | 36,887  |   |      |   | 17,050  |  
|Property & Equipment                                                |  |              | 219     |   |      |   | 140     |  
|                                                                    |  |              |         |   |      |   |         |  
|Total deferred tax liabilities                                      |  |              | 44,297  |   |      |   | 20,690  |  
|                                                                    |  |              |         |   |      |   |         |  
|Gross deferred tax assets:                                          |  |              |         |   |      |   |         |  
|Capital and State operating loss carryforwards                      |  |              | (186    | ) |      |   | (1,888  | )
|Retirement and other liabilities                                    |  |              | (18,690 | ) |      |   | (13,481 | )
|Allowance for potential contract losses and other contract reserves |  |              | (2,691  | ) |      |   | (2,704  | )
|                                                                    |  |              |         |   |      |   |         |  
|Total deferred tax assets                                           |  |              | (21,567 | ) |      |   | (18,073 | )
|                                                                    |  |              |         |   |      |   |         |  
|Valuation Allowance                                                 |  |              |        |   |      |   | 1,963   |  
|Net deferred tax liabilities                                        |  | $            | 22,730  |   |      | $ | 4,580   |  
|                                                                    |  |              |         |   |      |   |         |  

The tax benefits associated with nonqualified stock options, disqualifying dispositions of
incentive stock options, and a stock based SERP reduced the current taxes payable by $11.3 million in 2007 and $4.4 million in 2006. Such benefits were recorded as an increase to additional paid-in capital.



76



---

MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



At December 31, 2007, we had a capital loss carryforward of $0.05 million that expires in 2008.
At December 31, 2007, we had state net operating losses of approximately $0.2 million that expire beginning 2017 through 2027.

In
2005, a $1.3 million valuation allowance against certain state net operating losses incurred by our MSM subsidiary was reflected in discontinued operations. In 2006, this valuation allowance increased to $2.0 million and was transferred into
continuing operations after the merger of MSM, Inc. into MSM, LLC on December 18, 2006. In 2007, $(0.3) million of this valuation allowance was removed, as the related deferred tax asset became utilizable; and the balance was removed, as the
related tax asset is an unrecognized tax benefit, which is not more likely than not of being recognized.

Adoption of FIN 48

In June 2006, the FASB issued Interpretation No. 48 (FIN 48), Accounting for Uncertainty in Income TaxesAn Interpretation of FASB
Statement No. 109, which clarifies the accounting for uncertainty in tax positions. FIN 48 seeks to reduce the diversity in accounting practices used in regards to uncertain tax positions by prescribing a recognition threshold and
measurement criteria for benefits related to income taxes.

Effective January 1, 2007, we adopted the provisions of FIN 48.
Previously, the Company had accounted for tax contingencies in accordance with Statement of Financial Accounting Standards 5, Accounting for Contingencies. As required by FIN 48, the Company recognizes the financial statement benefit of a tax
position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount recognized in the financial statements is
the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority.

At the adoption date, the Company applied FIN 48 to all tax positions for which the statute of limitations remained open. As a result of the implementation of FIN 48, the Company recognized an increase of approximately $0.1 million in the
liability for net unrecognized tax benefits and interest and penalties, which was accounted for as a reduction to the January 1, 2007 balance of retained earnings.

The total liability for gross unrecognized tax benefits as of January 1, 2007, was $1.3 million. That amount included $0.3 million of unrecognized net tax benefits which, if ultimately recognized, would reduce
the Companys annual effective tax rate in a future period. Since January 1, 2007, there have been changes in the liability for gross unrecognized tax benefits totaling $1.0 million in gross unrecognized tax benefits. Additionally, the SRS
and MBI acquisitions added additional liabilities for gross unrecognized tax benefits of $0.7 million. A reconciliation of the beginning and ending balances of the total amounts of gross unrecognized tax benefits is as follows (in thousands):



|                                                       |  |   |        |  
|------------------------------------------------------ |  | - | ------ | -
|Gross unrecognized tax benefits at January 1, 2007     |  | $ | 1,310  |  
|Increases in tax positions related to prior years      |  |   | 1,096  |  
|Decreases in tax positions for prior years             |  |   | (111   | )
|Increases in tax positions for current year            |  |   | 392    |  
|Settlements                                            |  |   | (366   | )
|Lapse in statute of limitations                        |  |   | (30    | )
|Acquisitionsincrease in tax positions for prior years |  |   | 2,966  |  
|Acquisitionsdecrease in tax positions for prior years |  |   | (2,295 | )
|                                                       |  |   |        |  
|Gross unrecognized tax benefits at December 31, 2007   |  | $ | 2,962  |  
|                                                       |  |   |        |  



77



---

MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



The total liability for gross unrecognized tax benefits as of December 31, 2007, was $3.0
million. That amount includes $1.6 million of unrecognized net tax benefits which, if ultimately recognized, would reduce the Companys annual effective tax rate in a future period and $0.6 million which would, until the adoption of SFAS 141R
in fiscal year 2009, affect goodwill.

The Company is subject to income taxes in the U.S., and various state and foreign jurisdictions. Tax
statutes and regulations within each jurisdiction are subject to the interpretation and require significant judgment to apply. The Company is currently under examination by one state jurisdiction for years subsequent to 2003. Two state audits
relating to pre-2003 years were settled in 2007. Otherwise, the Company is no longer subject to U.S., state, or non-U.S. income tax examinations by tax authorities for the years before 2003. The Company is currently under audit by the IRS for an
amended 2003 U.S. return filed to claim a research and experimentation credit. The Company believes it is reasonably possible that $1.7 million of gross unrecognized tax benefits will be settled within the next twelve months; $1.1 million relating
to the research and experimentation credit audit and $0.6 million relating to a foreign jurisdiction amnesty proceeding.

The Company
recognizes interest accrued, related to net unrecognized tax benefits, in interest expense; and penalties, in general and administrative expenses; for all periods presented. The Company had accrued approximately $0.1 million for the payment of
interest and penalties at adoption. $0.1 million of interest, accrued prior to the adoption of FIN 48, was paid for the two settled state audits in 2007. Subsequent changes to accrued interest and penalties have been an increase of $0.1 million. At
December 31, 2007, accrued interest and penalties relating to net unrecognized tax benefits is $0.2 million.

13. Business Segment and Geographic
Area Information

We operate as one segment, delivering a broad array of information technology and technical services solutions under
contracts with the U.S. government, state and local governments, and commercial customers. Our federal government customers typically exercise independent contracting authority, and even offices or divisions within an agency or department may
directly, or through a prime contractor, use our services as a separate customer so long as that customer has independent decision-making and contracting authority within its organization. Revenues from the U.S. government under prime contracts and
subcontracts, as compared to total contract revenues, were approximately 97.7%, 97.8% and 98.0% for the years ended December 31, 2007, 2006 and 2005, respectively. There were no sales to any customers within a single country (except for the
United States) where the sales accounted for 10% or more of total revenue. We treat sales to U.S. government customers as sales within the United States regardless of where the services are performed. Substantially all assets of continuing
operations were held in the United States for the years ended December 31, 2007, 2006 and 2005. Revenues by geographic customer and the related percentages of total revenues for the years ended December 31, 2007, 2006 and 2005, were as
follows (in thousands):



|              |  |                         |           |  |       |   |  |      |           |  |       |   |  |   |         |  |       |  
|------------- |  | ----------------------- | --------- |  | ----- | - |  | ---- | --------- |  | ----- | - |  | - | ------- |  | ----- | -
|              |  | Year Ended December 31, |          
|              |  | 2007                    |           |  | 2006  |   |  | 2005 |          
|United States |  | $                       | 1,428,975 |  | 98.7  | % |  | $    | 1,124,888 |  | 98.9  | % |  | $ | 973,083 |  | 99.3  | %
|International |  |                         | 19,123    |  | 1.3   |   |  |      | 12,290    |  | 1.1   |   |  |   | 7,206   |  | 0.7   |  
|              |  |                         |           |  |       |   |  |      |           |  |       |   |  |   |         |  |       |  
|              |  | $                       | 1,448,098 |  | 100.0 | % |  | $    | 1,137,178 |  | 100.0 | % |  | $ | 980,289 |  | 100.0 | %
|              |  |                         |           |  |       |   |  |      |           |  |       |   |  |   |         |  |       |  



78



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



In 2007, our Countermine contract exceeded 10% of revenues. In 2006, our Countermine contract
exceeded 10% of revenues for the third and fourth quarters. During 2005, we had one contract, Regional Logistics Support to the Warfighter, in continuing operations exceed 10% of our revenue.



|                                                      |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|----------------------------------------------------- |  | ----------------------- | --------- | - | --- | - | ---- | - | --------- |  | --- | ---- |  | - | ------- |  | --- | -
|                                                      |  | Year Ended December 31, |          
|                                                      |  | 2007                    |           | % |     |   | 2006 |   | %         |  |     | 2005 |  | % |        
|                                                      |  | (amount in thousands)   |          
|Revenues from external customers:                     |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|Regional Logistics Support to the Warfighter contract |  | $                       | 10,601    |   | 1   | % |      | $ | 86,101    |  | 8   | %    |  | $ | 110,001 |  | 11  | %
|Countermine                                           |  |                         | 209,188   |   | 14  | % |      |   | 102,435   |  | 9   | %    |  |   |        |  | 0   | %
|All other contracts                                   |  |                         | 1,228,309 |   | 85  | % |      |   | 948,642   |  | 83  | %    |  |   | 870,288 |  | 89  | %
|                                                      |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|ManTech Consolidated                                  |  | $                       | 1,448,098 |   | 100 | % |      | $ | 1,137,178 |  | 100 | %    |  | $ | 980,289 |  | 100 | %
|                                                      |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|Operating Income:                                     |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|Regional Logistics Support to the Warfighter contract |  | $                       | 218       |   | 0   | % |      | $ | 5,679     |  | 6   | %    |  | $ | 7,071   |  | 8   | %
|Countermine                                           |  |                         | 5,832     |   | 5   | % |      |   | 3,422     |  | 4   | %    |  |   |        |  | 0   | %
|All other contracts                                   |  |                         | 107,654   |   | 95  | % |      |   | 81,549    |  | 90  | %    |  |   | 77,107  |  | 92  | %
|                                                      |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|ManTech Consolidated                                  |  | $                       | 113,704   |   | 100 | % |      | $ | 90,650    |  | 100 | %    |  | $ | 84,178  |  | 100 | %
|                                                      |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|Receivables:                                          |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|Regional Logistics Support to the Warfighter contract |  | $                       |          |   | 0   | % |      | $ | 11,188    |  | 5   | %    |  | $ | 31,696  |  | 13  | %
|Countermine                                           |  |                         | 22,540    |   | 7   | % |      |   | 16,962    |  | 7   | %    |  |   |        |  | 0   | %
|All other contracts                                   |  |                         | 314,927   |   | 93  | % |      |   | 208,295   |  | 88  | %    |  |   | 207,989 |  | 87  | %
|                                                      |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  
|ManTech Consolidated                                  |  | $                       | 337,467   |   | 100 | % |      | $ | 236,445   |  | 100 | %    |  | $ | 239,685 |  | 100 | %
|                                                      |  |                         |           |   |     |   |      |   |           |  |     |      |  |   |         |  |     |  

Disclosure items required under SFAS No. 131 including interest revenue, interest expense,
depreciation and amortization, costs for stock-based compensation programs, certain unallowable costs as determined under Federal Acquisition Regulations, and expenditures for segment assets are not applicable as we review those items on a
consolidated basis.

14. Investments

GSE Systems, Inc.In April 1994, GSE Systems, Inc. (GSE) was created by the merger of one of our majority-owned subsidiaries and two other entities. During the year ended December 31, 2001, we determined that we had
obtained significant influence with respect to GSE. At December 31, 2002, we held 914,784 shares of GSE common stock, $3.8 million of GSE convertible preferred stock and a $0.7 million demand note receivable from GSE. This note accrued interest
at the prime rate plus 1.00% and interest was payable monthly. On October 21, 2003, we sold all of our equity interests in GSE, and a $0.7 million note receivable from GSE, to GP Strategies Corporation (GP Strategies) in exchange for a note
with a principal amount of $5.3 million due in October 2008. The note from GP Strategies bears interest at 5% per annum and is payable quarterly in arrears. Each year during the term of the note, we have the option to convert up to 20% of the
original principal amount of the note into common stock of GP Strategies, but only in the event that GP Strategies common stock is trading at $10 per share or more. At points during 2007, the stock was trading above this threshold and the note
was eligible for conversion at 20% of the original principal amount on a cumulative basis since inception. As of December 31, 2007, we have not converted any of the note to common stock. In addition, GP Strategies no longer has an investment in
GSE Systems, Inc.



79



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



During 2007, George J. Pedersen, our Chairman of the Board and Chief Executive Officer, beneficially
owned shares and options of GSE stock representing less than 5% of GSE. In 2007, Mr. Pedersen served on GSEs board of directors and compensation committee.

Vosper-ManTech LimitedOn September 7, 1995, MASI U.K. Limited, a majority-owned subsidiary of ours, and Vosper Thornycroft Limited entered into a Joint Venture agreement to form Vosper-ManTech
Limited (the Joint Venture). MASI U.K. Limited held a 40% ownership in the Joint Venture and Vosper Thornycroft Limited owned the remaining 60%. In 2000, the Joint Venture began work on a ten-year follow-on contract providing outsourcing of the
Government Communications Headquarters (GCHQ) for the United Kingdoms logistics and engineering services. Mr. Pedersen and John A. Moore, our former Executive Vice President, each owned 1% of the outstanding shares of MASI U.K. In
December 2005, we purchased the 2% of outstanding shares of MASI U.K. from Mr. Pedersen and Mr. Moore for $43 thousand each, or a total of $86 thousand.

Our interest in the Joint Venture was accounted for using the equity method. Equity earnings for the years ended December 31, 2007 and 2006 were zero and $0.5 million for the year ended December 31, 2005. In
December 2005, MASI U.K. Limited sold its 40% ownership in the joint venture to Vosper Thornycroft Limited for approximately $4.3 million including accrued dividends, which resulted in a pre-tax gain of approximately $1.6 million.

15. Discontinued Operations

In February 2005, we
reached a final corporate determination to exit the personnel security investigation services business and discontinue operations at our MSM subsidiary. We reached the determination to sell our MSM subsidiary after we concluded that the MSM business
no longer furthered our long-term strategic objectives. At December 31, 2005, we recorded a loss accrual of $3.6 million on the valuation of these assets based on offers received from potential buyers in early 2006. The loss accrual
reflects the write-off of intangible assets including goodwill, net of taxes. The loss also reflects a valuation allowance of $1.3 million for deferred state income tax assets related to net operating losses carried forward, which are not expected
to be realized.

On February 23, 2007, we sold MSM to MSM Security Services Holdings, LLC for $3.0 million in cash. The sale resulted
in a pre-tax gain of $0.6 million recorded in the first quarter of 2007. MSM Security Services Holdings LLC is solely owned by George J. Pedersen, ManTechs Chairman and Chief Executive Officer. Mr. Pedersen presented an offer to the
ManTech Board of Directors to purchase our MSM subsidiary. Mr. Pedersens offer exceeded the value of any other definitive offer extended to the Company. The transaction was approved by ManTechs independent directors after receiving
unanimous recommendation for approval of the transaction from a special committee of the Board, comprised solely of independent directors. The special committee had retained the services of independent legal counsel and independent financial
advisors to advise the committee and assist it in connection with its duties.

The Consolidated Financial Statements and related note
disclosures reflect the ManTech MSM Security Services, Inc. (MSM) subsidiary as Long-Lived Assets to Be Disposed Of by Sale for all periods presented in accordance with SFAS No. 144, Accounting for the Impairment or Disposal of
Long-Lived Assets. As such, MSM was classified as held for sale in the consolidated balance sheets and discontinued operations, net of applicable income taxes in the consolidated statements of income.



80



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



The following discloses the results of the discontinued operations of MSM for the years ended
December 31, 2007, 2006 and 2005 (in thousands):



|                         |  |                         |       |   |      |   |        |      |  |   |         |  
|------------------------ |  | ----------------------- | ----- | - | ---- | - | ------ | ---- |  | - | ------- | -
|                         |  | Year Ended December 31, |      
|                         |  | 2007                    |       |   | 2006 |   |        | 2005 | 
|Revenue                  |  | $                       | 1,829 |   |      | $ | 14,367 |      |  | $ | 6,845   |  
|Loss before income taxes |  | $                       | (749  | ) |      | $ | (7,530 | )    |  | $ | (12,212 | )
|Net Loss                 |  | $                       | (458  | ) |      | $ | (4,895 | )    |  | $ | (9,010  | )

The following is a summary of the assets and liabilities held for sale related to MSM at
December 31, 2006 (in thousands):



|                                      |  |                  |      
|------------------------------------- |  | ---------------- | -----
|                                      |  | December 31,2006
|Receivables, net                      |  | $                | 2,674
|Prepaid expenses and other            |  |                  | 70   
|Property and equipment                |  |                  | 629  
|Other assets                          |  |                  |     
|                                      |  |                  |      
|Total Assets                          |  | $                | 3,373
|                                      |  |                  |      
|Accounts payable and accrued expenses |  | $                | 724  
|Accrued salaries and related expenses |  |                  | 369  
|Billings in excess of revenue earned  |  |                  | 670  
|Other liabilities                     |  |                  | 52   
|                                      |  |                  |      
|Total Liabilities                     |  | $                | 1,815
|                                      |  |                  |      

16. Gain on Disposal of Operations

On October 31, 2006, we sold assets related to our NetWitness® operation to the NetWitness Acquisition Corporation, an unrelated third party, for $2.0 million in cash and an equity stake in the new company of less then 5%. The sale of NetWitness® included $1.0 million in goodwill and a fully amortized intangible asset with a cost basis of $0.4 million. We recorded a pre-tax gain of approximately $1.0 million on the transaction. We continue to provide
NetWitness® product and services to various federal government agencies through subcontracts with the NetWitness Acquisition Corporation.

On February 11, 2005, we sold our ManTech Environmental Technology, Inc (METI) subsidiary to another company, Alion Science and Technology
Corporation. METI performs professional services including research and development in the fields of environmental and life sciences for the Environmental Protection Agency, the National Cancer Institute, the U.S. Air Force, and other federal
government agencies. The financial terms of the arrangement included an all cash payment of $7.0 million, which resulted in a pre-tax gain of approximately $3.7 million, net of selling costs, in the first quarter of 2005. After the sale, we continue
to provide professional services in the environmental area for various federal government agencies.

The following discloses the results of METI for the year ended December 31, 2005 (METIs results for 2005 are through February 11th) (in thousands):



|                                         |  |      |      
|---------------------------------------- |  | ---- | -----
|                                         |  | 2005
|Revenue                                  |  | $    | 1,379
|Income before provision for income taxes |  | $    | 55   
|Net Income                               |  | $    | 34   



81



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MANTECH INTERNATIONAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS(Continued)



17. Quarterly Financial Data (Unaudited)

The following tables set forth selected unaudited quarterly financial data. The quarterly financial data reflects, in the opinion of the company, all
normal and recurring adjustments necessary to present fairly the results of operations for such periods. Results of any one or more quarters are not necessarily indicative of annual results or continuing trends.



|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|------------------------------------------------- |  | ------------------- | ------- | - | -------- | - | ------- | ------------- |  | - | ------------ | - |  | - | ------- | -
|                                                  |  | 2007 Quarters Ended |        
|(in thousands, except per share data)             |  | March 31,           |         |   | June 30, |   |         | September 30, |  |   | December 31, |  
|Revenues                                          |  | $                   | 294,285 |   |          | $ | 348,700 |               |  | $ | 383,359      |   |  | $ | 421,754 |  
|Cost of services                                  |  |                     | 246,903 |   |          |   | 292,253 |               |  |   | 321,133      |   |  |   | 353,861 |  
|General and administrative expenses               |  |                     | 26,019  |   |          |   | 30,968  |               |  |   | 31,804       |   |  |   | 31,453  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Operating Income                                  |  |                     | 21,363  |   |          |   | 25,479  |               |  |   | 30,422       |   |  |   | 36,440  |  
|Interest income (expense), net                    |  |                     | 327     |   |          |   | (910    | )             |  |   | (1,734       | ) |  |   | (1,525  | )
|Other income (expense), net                       |  |                     | 12      |   |          |   | 334     |               |  |   | (84          | ) |  |   | 1       |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Income before provision for income taxes          |  |                     | 21,702  |   |          |   | 24,903  |               |  |   | 28,604       |   |  |   | 34,916  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Net income                                        |  | $                   | 13,248  |   |          | $ | 15,104  |               |  | $ | 17,475       |   |  | $ | 21,380  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Basic net income per shareClass A Common Stock   |  | $                   | 0.39    |   |          | $ | 0.44    |               |  | $ | 0.51         |   |  | $ | 0.62    |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Weighted average shares outstandingClass A       |  |                     | 19,306  |   |          |   | 19,575  |               |  |   | 19,779       |   |  |   | 20,064  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Basic net income per shareClass B Common Stock   |  | $                   | 0.39    |   |          | $ | 0.44    |               |  | $ | 0.51         |   |  | $ | 0.62    |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Weighted average shares outstandingClass B       |  |                     | 14,570  |   |          |   | 14,428  |               |  |   | 14,382       |   |  |   | 14,346  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Diluted net income per shareClass A Common Stock |  | $                   | 0.39    |   |          | $ | 0.44    |               |  | $ | 0.51         |   |  | $ | 0.61    |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Weighted average shares outstandingClass A       |  |                     | 19,771  |   |          |   | 19,965  |               |  |   | 20,181       |   |  |   | 20,522  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Diluted net income per shareClass B Common Stock |  | $                   | 0.39    |   |          | $ | 0.44    |               |  | $ | 0.51         |   |  | $ | 0.61    |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Weighted average shares outstandingClass B       |  |                     | 14,570  |   |          |   | 14,428  |               |  |   | 14,382       |   |  |   | 14,346  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|                                                  | 
|                                                  |  | 2006 Quarters Ended |        
|(in thousands, except per share data)             |  | March 31,           |         |   | June 30, |   |         | September 30, |  |   | December 31, |  
|Revenues                                          |  | $                   | 275,306 |   |          | $ | 287,465 |               |  | $ | 283,695      |   |  | $ | 290,712 |  
|Cost of services                                  |  |                     | 227,807 |   |          |   | 238,879 |               |  |   | 235,539      |   |  |   | 241,925 |  
|General and administrative expenses               |  |                     | 24,766  |   |          |   | 26,150  |               |  |   | 25,142       |   |  |   | 26,320  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Operating Income                                  |  |                     | 22,733  |   |          |   | 22,436  |               |  |   | 23,014       |   |  |   | 22,467  |  
|Gain on disposal of operations                    |  |                     |        |   |          |   |        |               |  |   |             |   |  |   | 955     |  
|Interest (expense) income, net                    |  |                     | (792    | ) |          |   | (601    | )             |  |   | (291         | ) |  |   | 118     |  
|Other (expense) income, net                       |  |                     | (79     | ) |          |   | 66      |               |  |   | 21           |   |  |   | 374     |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Income before provision for income taxes          |  |                     | 21,862  |   |          |   | 21,901  |               |  |   | 22,744       |   |  |   | 23,914  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Net income                                        |  | $                   | 12,135  |   |          | $ | 11,957  |               |  | $ | 12,690       |   |  | $ | 13,919  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Basic net income per shareClass A Common Stock   |  | $                   | 0.37    |   |          | $ | 0.36    |               |  | $ | 0.38         |   |  | $ | 0.41    |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Weighted average shares outstandingClass A       |  |                     | 18,053  |   |          |   | 18,380  |               |  |   | 18,534       |   |  |   | 18,821  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Basic net income per shareClass B Common Stock   |  | $                   | 0.37    |   |          | $ | 0.36    |               |  | $ | 0.38         |   |  | $ | 0.41    |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Weighted average shares outstandingClass B       |  |                     | 15,065  |   |          |   | 15,065  |               |  |   | 15,064       |   |  |   | 15,053  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Diluted net income per shareClass A Common Stock |  | $                   | 0.36    |   |          | $ | 0.35    |               |  | $ | 0.37         |   |  | $ | 0.41    |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Weighted average shares outstandingClass A       |  |                     | 18,463  |   |          |   | 18,847  |               |  |   | 18,906       |   |  |   | 19,288  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Diluted net income per shareClass B Common Stock |  | $                   | 0.36    |   |          | $ | 0.35    |               |  | $ | 0.37         |   |  | $ | 0.41    |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  
|Weighted average shares outstandingClass B       |  |                     | 15,065  |   |          |   | 15,065  |               |  |   | 15,064       |   |  |   | 15,053  |  
|                                                  |  |                     |         |   |          |   |         |               |  |   |              |   |  |   |         |  



82



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Item 9.Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

The Company has had no disagreements with its auditors on accounting principles, practices or financial statement
disclosure during and through the date of the financial statements included in this Report.

Item 9A.Controls and Procedures

We performed an assessment as of December 31, 2007 of the effectiveness of the design and operation of our disclosure controls and
procedures and our internal control over financial reporting. This assessment was done under the supervision and with the participation of management, including our principal executive officer and principal financial officer. Included as Exhibits
31.1 and 31.2 to this Annual Report on Form 10-K are forms of Certification of our principal executive officer (our Chairman of the Board and Chief Executive Officer) and our principal financial officer (our Chief Financial Officer). The
forms of Certification are required in accordance with Section 302 of the Sarbanes-Oxley Act of 2002. This section of the Annual Report on Form 10-K that you are currently reading is the information concerning the assessment referred to in the
Section 302 certifications and required by the rules and regulations of the SEC. You should read this information in conjunction with the Section 302 certifications for a more complete understanding of the topics presented.

Disclosure Controls and Procedures and Internal Control over Financial Reporting. Management is responsible for establishing and maintaining
adequate disclosure controls and procedures and internal control over financial reporting. Disclosure controls and procedures are designed to provide reasonable assurance that information required to be disclosed in our reports filed or submitted
under the Exchange Act, such as this Annual Report on Form 10-K, is accurately recorded, processed, summarized and reported within the time periods specified in the SECs rules and forms. Disclosure controls and procedures are also designed to
provide reasonable assurance that such information is accumulated and communicated to our management, including our principal executive officer and our principal financial officer, as appropriate to allow timely decisions regarding required
disclosure.

Internal control over financial reporting is a process designed by, or under the supervision of our principal executive
officer and our principal financial officer, and effected by our Board of Directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for
external purposes in accordance with GAAP and includes those policies and procedures that



| |  |  | pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of our assets;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with GAAP, and that our
receipts and expenditures are being made only in accordance with authorizations of management or our Board; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material
adverse effect on our financial statements.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Limitations on the Effectiveness of Controls. Management, including
our principal executive officer and our principal financial officer, do not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent all errors and all fraud. A control system, no matter how
well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits
of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no assessment of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the company
have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts
of some persons, by collusion of two or more people, or by managements override of the control. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no
assurance that any design will succeed in achieving its stated



83



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goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the degree of compliance with the
policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

Scope of the Assessments. The assessment by our principal executive officer and our principal financial officer of our disclosure controls and
procedures and the assessment by our management of our internal control over financial reporting included a review of procedures and documents and discussions with other employees in our organization in order to evaluate the adequacy of our internal
control system design. In the course of the evaluation, we sought to identify exposure to unprevented or undetected data errors, control problems or acts of fraud and to confirm that appropriate corrective action, including process improvements,
were being undertaken. The assessment also included testing of properly designed controls to verify their effective performance. Our management used the criteria issued by the Committee of Sponsoring Organizations of the Treadway Commission in
Internal ControlIntegrated Framework to assess the effectiveness of our internal control over financial reporting.

We assess
our disclosure controls and procedures and our internal control over financial reporting on an ongoing basis so that the conclusions concerning controls effectiveness can be reported in our Quarterly Reports on Form 10-Q and Annual Reports on Form
10-K. We consider the results of these assessment activities as we monitor our disclosure controls and procedures and our internal control over financial reporting. Our intent is to ensure that disclosure controls and procedures and internal control
over financial reporting will be maintained and updated as conditions warrant. Among other matters, we sought in our assessment to determine whether there were any material weaknesses in our internal control over financial reporting, or
whether we had identified any acts of fraud involving senior management, management or other personnel who have a significant role in our internal control over financial reporting. This information was important both for the assessment generally and
because the Section 302 certifications require that our principal executive officer and our principal financial officer disclose that information, along with any significant deficiencies, to the Audit Committee of our Board of
Directors, and to our independent auditors and to report on related matters in this section of the Annual Report on Form 10-K.

Managements assessment of our internal controls over financial reporting included all significant subsidiaries of ManTech with the exception of the SRS Technologies (SRS) and McDonald Bradley, Inc. entities acquired during the year.
The timing and integration schedule for these entities did not reasonably allow full internal control testing in this initial acquisition year but will be included in future assessments. See Item 8, Note 3 for a discussion of these acquisitions
and Item 6, note (a) for the disclosure of the relative significance of these acquired entities to ManTech for the year 2007.

Assessment of Effectiveness of Disclosure Controls and Procedures. Based upon the assessments, our principal executive officer and our principal financial officer have concluded that as of December 31, 2007 our disclosure
controls and procedures were effective.

Managements Report on Internal Control Over Financial Reporting. Management is
responsible for establishing and maintaining adequate control over financial reporting. Management used the criteria issued by the Committee of Sponsoring Organizations of the Treadway Commission in Internal ControlIntegrated Framework
to assess the effectiveness of our internal control over financial reporting. Based upon the assessments, our management has concluded that as of December 31, 2007 our internal control over financial reporting was effective. Our independent
registered public accounting firm issued an attestation report concerning our internal control over financial reporting, which appears on page 85 of this Annual Report on Form 10-K.

Changes in Internal Control over Financial Reporting. During the three months ended December 31, 2007, there were no changes in our internal
control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control for financial reporting.

Item 9B.Other Information

None.



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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM ON INTERNAL

CONTROL OVER FINANCIAL REPORTING

To the Board of
Directors and Stockholders of

ManTech International Corporation

Fairfax, Virginia

We have audited the internal control over financial reporting of ManTech International Corporation and subsidiaries (the
Company) as of December 31, 2007, based on criteria established in Internal ControlIntegrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway Commission. As described in
Managements Report on Internal Control Over Financial Reporting, management excluded from its assessment the internal control over financial reporting at SRS Technologies, which was acquired on May 7, 2007 and whose financial statements
constitute 37% and 26% of net and total assets, respectively, 10% of revenues, and 9% of net income of the consolidated financial statement amounts as of and for the year ended December 31, 2007. Management also excluded from its
assessment the internal control over financial reporting at McDonald Bradley, Inc., which was acquired on December 18, 2007 and whose financial statements constitute 1% of net and total assets, respectively, and less than 1% of revenues and net
income of the consolidated financial statement amounts as of an for the year ended December 31, 2007. Accordingly, our audit did not include the internal control over financial reporting at SRS Technologies and McDonald Bradley, Inc. The
Companys management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Managements
Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Companys internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance
about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness
exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a
reasonable basis for our opinion.

A companys internal control over financial reporting is a process designed by, or under the supervision of, the
companys principal executive and principal financial officers, or persons performing similar functions, and effected by the companys board of directors, management, and other personnel to provide reasonable assurance regarding the
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A companys internal control over financial reporting includes those policies
and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are
recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management
and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the companys assets that could have a material effect on the financial
statements.

Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper
management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to
future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.



85



---

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as
of December 31, 2007, based on the criteria established in Internal ControlIntegrated Frameworkissued by the Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements and
financial statement schedules as of and for the year ended December 31, 2007 of the Company and our report dated March 17, 2008 expressed an unqualified opinion on those financial statements and financial statement schedule and included an
explanatory paragraph regarding the Companys adoption of FASB Interpretation No. 48, Accounting for Uncertainty in Income TaxesAn Interpretation of FASB Statement No. 109 and FASB Statement No. 123(R),
Share-Based Payment.

/s/ DELOITTE & TOUCHE LLP

McLean, Virginia

March 17, 2008



86



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PART III

Item 10.Directors and Executive Officers of the Registrant and Corporate Governance

The
information concerning our directors and executive officers required by Item 401 of Regulation S-K is included under the captions Election of Directors and Executive Officers, respectively, in our definitive Proxy
Statement to be filed with the SEC in connection with our 2008 Annual Meeting of Stockholders (the 2008 Proxy Statement), and that information is incorporated by reference in this Annual Report on Form 10-K.

The information required by Item 405 of Regulation S-K concerning compliance with Section 16(a) of the Exchange Act is included under the
caption Section 16(a) Beneficial Ownership Reporting Compliance in our 2008 Proxy Statement, and that information is incorporated by reference in this Annual Report on Form 10-K.

We have adopted a Standards of Ethics and Business Conduct, which sets forth the policies comprising our code of conduct. These policies satisfy
the SECs requirements (including Item 406 of Regulation S-K) for a code of ethics applicable to our principal executive officer, principal financial officer, principal accounting officer, controller or persons performing
similar functions, as well as Nasdaqs requirements for a code of conduct applicable to all directors, officers and employees. Among other principles, our Standards of Ethics and Business Conduct includes guidelines relating to the
ethical handling of actual or potential conflicts of interest, compliance with laws, accurate financial reporting, and procedures for promoting compliance with (and reporting violations of) these standards. A copy of our Standards of Ethics and
Business Conduct is available on the investor relations section of our website: www.mantech.com. We are required to disclose any amendment to, or waiver from, a provision of our code of ethics that applies to our principal executive officer,
principal financial officer, principal accounting officer, controller and persons performing similar functions. We intend to use our website as a method of disseminating this disclosure as permitted by applicable SEC rules.

The information required by Item 407(c)(3) of Regulation S-K concerning the procedures by which our stockholders may recommend nominees to our Board
of Directors is included under the caption Director Nominations in our 2008 Proxy Statement, and that information is incorporated by reference in this Annual Report on Form 10-K.

The information required by Item 407(d)(4) of Regulation S-K concerning the Audit Committee is included under the caption Report of the Audit
Committee in our 2008 Proxy Statement, and that information is incorporated by reference in this Annual Report on Form 10-K.

The
information required by Item 407(d)(5) of Regulation S-K concerning the designation of an audit committee financial expert is included under the caption Report of the Audit Committee in our 2008 Proxy Statement, and that information
is incorporated by reference in this Annual Report on Form 10-K.

Item 11.Executive Compensation

The information required by this Item 11 is included under the captions Compensation Committee Report and Compensation Discussion
and Analysis and the related text and tables in our 2008 Proxy Statement, and that information (except for the information required by Item 402(k) and Item 402(l) of Regulation S-K) is incorporated by reference in this Annual Report
on Form 10-K.

Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this Item 12 is included under the captions Ownership by Our Directors and Executive Officers
and Ownership by Holders of More Than 5% of Our Class A Common Stock in our 2008 Proxy Statement, and that information is incorporated by reference in this Annual Report on Form 10-K.



87



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Securities Authorized for Issuance under Equity Compensation Plans

The following table provides information as of December 31, 2007 with respect to compensation plans (including individual compensation arrangements)
under which our equity securities are authorized for issuance.



|                                                           |  |                                                                                          |  |                                                                           |       |                                                                                                                                              |          
|---------------------------------------------------------- |  | ---------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------- | ----- | -------------------------------------------------------------------------------------------------------------------------------------------- | ---------
|Plan Category                                              |  | Number of securities tobe issued upon exerciseof outstanding options,warrants and rights |  | Weighted-average exercise price ofoutstanding options,warrants and rights |       | Number of securitiesremaining available forfuture issuance under equitycompensation
plans(excluding securitiesreflected in the first column)
|Equity compensation plans approved by security holders (1) |  | 2,301,242                                                                                |  | $                                                                         | 28.30 |                                                                                                                                              | 2,071,771
|Equity compensation plans not approved by security holders |  |                                                                                         |  |                                                                           |      |                                                                                                                                              |         
|                                                           |  |                                                                                          |  |                                                                           |       |                                                                                                                                              |          
|Total                                                      |  | 2,301,242                                                                                |  | $                                                                         | 28.30 |                                                                                                                                              | 2,071,771
|                                                           |  |                                                                                          |  |                                                                           |       |                                                                                                                                              |          



|1) | The plan contains a formula that automatically increases the number of securities available for issuance. The plan provision provides that the number of shares available for
issuance under the plan automatically increases on the first trading day of January each calendar year during the term of the plan (beginning with calendar year 2003), by an amount equal to one and one-half percent (1.5%) of the total number of
shares outstanding (including all outstanding classes of common stock) on the last trading day in December of the immediately preceding calendar year, but provides that in no event shall any such annual increase exceed one million five hundred
thousand (1,500,000) shares. On January 2, 2008, 517,667 shares were added to the plan under this provision.
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Item 13.Certain Relationships and Related Transactions and Director Independence

The information required by this
Item 13 is included under the caption Certain Relationships and Related Transactions and Independence of Directors and Audit Committee Financial Experts in our 2008 Proxy Statement, and that information is incorporated
by reference in this Annual Report on Form 10-K.

Item 14.Principal Accounting Fees and Services

The information required by this Item 14 is included under the captions Ratification of Appointment of Independent AuditorsFees Paid to
Deloitte & Touche LLP and Policy Regarding Audit Committee Pre-Approval of Audit and Permitted Non-audit Services in our 2008 Proxy Statement, and that information is incorporated by reference in this Annual Report
on Form 10-K.



88



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PART IV

Item 15.Exhibits and Financial Statement Schedules

(a) The following documents are
filed as a part of this Annual Report on Form 10-K:

(1) All financial statements:



|                                                                                                                                  |  |      
|--------------------------------------------------------------------------------------------------------------------------------- |  | -----
|DESCRIPTION                                                                                                                       |  |      
|Report of Independent Registered Public Accounting Firm on the Consolidated Financial Statements and Financial Statement Schedule |  | 46   
|Consolidated Balance Sheets as of December 31, 2007 and 2006                                                                      |  | 47   
|Consolidated Statements of Income for the years ended December 31, 2007, 2006 and 2005                                            |  | 48   
|Consolidated Statements of Comprehensive Income for the years ended December 31, 2007, 2006 and 2005                              |  | 49   
|Consolidated Statements of Changes in Stockholders Equity for the years ended December 31, 2007, 2006 and 2005                   |  | 50   
|Consolidated Statements of Cash Flows for the years ended December 31, 2007, 2006 and 2005                                        |  | 51-52
|Notes to Consolidated Financial Statements                                                                                        |  | 53-82
|                                                                                                                                  | 
|(2) Financial statement schedule:                                                                                                 |  | 94   



|             |  |                                                                                       
|------------ |  | --------------------------------------------------------------------------------------
|SCHEDULE NO. |  | DESCRIPTION                                                                           
|Schedule II  |  | Valuation and Qualifying Accounts for the years ended December 31, 2007, 2006 and 2005

(3) Exhibits required by Item 601 of Regulation S-K (each management contract
or compensatory plan or arrangement required to filed as an exhibit to this annual report pursuant to Item 15(b) of this annual report is identified in the Exhibit list below):



|              |  |                                                                                                                                                                                                                                                                                                                                                                                             
|------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Document Description                                                                                                                                                                                                                                                                                                                                                                        
|2.1           |  | LLC Membership Interest Purchase Agreement, by and among the registrant, ManTech Systems Engineering Corporation and MSM Security Services Holdings, LLC, dated as of February 14, 2007
(incorporated herein by reference from registrants Current Report on Form 8-K filed with the SEC on February 15, 2007).                                                                            
|              | 
|2.2           |  | Agreement and Plan of Merger, by and among ManTech International Corporation, SRS Technologies, Inc. (SRS), certain shareholders of SRS, Quicksilver Acquisition Corp., and certain
persons acting as a representative for the shareholders of SRS, dated April 6, 2007 (incorporated herein by reference from registrants Current Report on Form 8-K filed with the SEC on May 8, 2007).
|              | 
|2.3           |  | Agreement and Plan of Merger, by and among ManTech International Corporation, McDonald Bradley, Inc., Spyglass Acquisition Corp., and a representative for the shareholders of McDonald Bradley,
dated November 15, 2007 (incorporated herein by reference from registrants Current Report on Form 8-K filed with the SEC on December 19, 2007).                                           
|              | 
|3.1           |  | Second Amended and Restated Certificate of Incorporation of the registrant as filed with the Secretary of State of the State of Delaware on January 30, 2002 (incorporated herein by reference
from registrants Registration Statement on Form S-1 (File No. 333-73946), as filed with the Commission on November 23, 2002, as amended).                                                   



89



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|              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Document Description                                                                                                                                                                                                                                                                                                                                                                                                                                        
|3.2           |  | Second Amended and Restated Bylaws of the registrant (incorporated herein by reference from registrants Annual Report on Form 10-K for the year ended December 31, 2003).                                                                                                                                                                                                                                                                                  
|              | 
|4.1           |  | Form of Common Stock Certificate (incorporated herein by reference from registrants Registration Statement on Form S-1 (File No. 333-73946), as filed with the Commission on November 23,
2002, as amended).                                                                                                                                                                                                                                               
|              | 
|4.2           |  | Credit Agreement with Bank of America, N.A. (as Administrative Agent and L/C Issuer), Citizens Bank of Pennsylvania (as Syndication Agent), PNC Bank, National Association and Branch Banking and
Trust Company (each as a Documentation Agent) and the other lender parties thereto, dated April 30, 2007 (incorporated herein by reference from registrants Current Report on Form 8-K filed with the SEC on May 1, 2007).                               
|              | 
|10.1*         |  | Retention Agreement, effective as of January 1, 2002, between George J. Pedersen and the registrant (incorporated herein by reference from registrants Registration Statement on Form
S-1 (File No. 333-73946), as filed with the Commission on November 23, 2001, as amended).                                                                                                                                                                            
|              | 
|10.2*         |  | Management Incentive Plan of ManTech International Corporation, 2006 Restatement (incorporated herein by reference from registrants Registration Statement on Form S-8 (File No.
333-137129), as filed with the Commission on September 6, 2006).                                                                                                                                                                                                          
|              | 
|10.3*         |  | Form of Term Sheet for ManTech International Corporation Management Incentive Plan Non-Qualified Stock Option (incorporated herein by reference from registrants Current Report on Form 8-K,
as filed with the SEC on March 13, 2006).                                                                                                                                                                                                                     
|              | 
|10.4*         |  | Standard Terms and Conditions for Options Granted under Management Incentive Plan (incorporated herein by reference from registrants Current Report on Form 8-K, as filed with the SEC on
March 13, 2006).                                                                                                                                                                                                                                                 
|              | 
|10.5*         |  | ManTech International Corporation Supplemental Executive Retirement Plan (f/b/o George J. Pedersen), amended and restated effective January 1, 2005 (incorporated herein by reference from
registrants Current Report on Form 8-K, as filed with the SEC on March 13, 2006).                                                                                                                                                                               
|              | 
|10.6*         |  | Form of Confidentiality, Non-Competition and Non-Solicitation Agreement, effective as of February 7, 2002, between specified executive officers and the registrant (incorporated herein by
reference from registrants Registration Statement on Form S-1 (File No. 333-73946), as filed with the Commission on November 23, 2001, as amended).                                                                                                             
|              | 
|10.7*         |  | ManTech International Corporation 2007 Incentive Compensation Plan, adopted on March 6, 2007 to help attract, retain and motivate participants including our CEO, President, CFO and the
presidents of our principal business units, as well as certain other key members of senior management identified by our CEO and our President (incorporated herein by reference from registrants Current Report on Form 8-K filed with the SEC on
March 12, 2007).
|              | 
|10.8*         |  | Form of Term Sheet for 2007 Incentive Compensation Plan  Corporate Executive (incorporated herein by reference from registrants Current Report on Form 8-K filed with the SEC on March
12, 2007).                                                                                                                                                                                                                                                         
|              | 
|10.9*         |  | Form of Term Sheet for 2007 Incentive Compensation Plan  Subsidiary and Division President (incorporated herein by reference from registrants Current Report on Form 8-K filed with
the SEC on March 12, 2007).                                                                                                                                                                                                                                           
|              | 
|21.1         |  | Subsidiaries of the Company.                                                                                                                                                                                                                                                                                                                                                                                                                                
|              | 
|23.1         |  | Independent Registered Public Accounting Firm Consent.                                                                                                                                                                                                                                                                                                                                                                                                      
|              | 
|24.1          |  | Power of Attorney (included on signature page).                                                                                                                                                                                                                                                                                                                                                                                                             



90



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|              |  |                                                                                                                                                    
|------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Document Description                                                                                                                               
|31.1         |  | Certification of Chief Executive Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.                            
|              | 
|31.2         |  | Certification of Chief Financial Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.                            
|              | 
|32           |  | Certification of Chief Executive Officer and Chief Financial Officer pursuant to Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended.



| | Filed herewith.
|- | ---------------



|* | Management contract or compensatory plan or arrangement required to be filed as an Exhibit to this report pursuant to Item 14(c).
|- | ---------------------------------------------------------------------------------------------------------------------------------



91



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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.



MANTECH INTERNATIONAL CORPORATIONBy:

/s/    GEORGE J.
PEDERSENName:

George J. PedersenTitle:

Chairman of the Board of Directors and Chief Executive Officer (Principal Executive
Officer)Date:

March 17, 2008


Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been
signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. Each person whose signature appears below hereby constitutes and appoints each of George J. Pedersen and Kevin M. Phillips as his
attorney-in-fact and agent, with full power of substitution and resubstitution for him in any and all capacities, to sign any or all amendments to this Report and to file same, with exhibits thereto and other documents in connection therewith,
granting unto such attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary in connection with such matters and hereby ratifying and confirming all that such attorney-in-fact and
agent or his substitutes may do or cause to be done by virtue hereof.



|                                                         |  |                                                                                              |  |               
|-------------------------------------------------------- |  | -------------------------------------------------------------------------------------------- |  | --------------
|Name and Signature                                       |  | Title                                                                                        |  | Date          
|                                                         |  |                                                                                             
|/s/    GEORGE J.
PEDERSEN George J. Pedersen             |  | Chairman of the Board of Directors and Chief Executive Officer (Principal Executive Officer) |  | March 17, 2008
|                                                         |  |                                                                                             
|/s/    KEVIN M.
PHILLIPS Kevin M. Phillips               |  | Executive VP and Chief Financial Officer (Principal Financial Officer)                       |  | March 17, 2008
|                                                         |  |                                                                                             
|/s/    JOHN J.
FITZGERALD John J. Fitzgerald             |  | Senior VP Finance and Controller (Principal Accounting Officer)                              |  | March 17, 2008
|                                                         |  |                                                                                             
|/s/    RICHARD L.
ARMITAGE Richard L. Armitage           |  | Director                                                                                     |  | March 17, 2008
|                                                         |  |                                                                                             
|/s/    MARY K.
BUSH Mary K. Bush                         |  | Director                                                                                     |  | March 17, 2008
|                                                         |  |                                                                                             
|/s/    BARRY G.
CAMPBELL Barry G. Campbell               |  | Director                                                                                     |  | March 17, 2008
|                                                         |  |                                                                                             
|/s/    ROBERT A.
COLEMAN Robert A. Coleman               |  | Director and President and Chief Operating Officer                                           |  | March 17, 2008
|                                                         |  |                                                                                             
|/s/    WALTER R. FATZINGER,
JR. Walter R. Fatzinger, Jr. |  | Director                                                                                     |  | March 17, 2008



92



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|                                             |  |          |  |               
|-------------------------------------------- |  | -------- |  | --------------
|Name and Signature                           |  | Title    |  | Date          
|                                             |  |         
|/s/    DAVID E.
JEREMIAH David E. Jeremiah   |  | Director |  | March 17, 2008
|                                             |  |         
|/s/    RICHARD J.
KERR Richard J. Kerr       |  | Director |  | March 17, 2008
|                                             |  |         
|/s/    KENNETH A.
MINIHAN Kenneth A. Minihan |  | Director |  | March 17, 2008
|                                             |  |         
|/s/    STEPHEN W.
PORTER Stephen W. Porter   |  | Director |  | March 17, 2008



93



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SCHEDULE II

Valuation and Qualifying Accounts

Activity in the Companys allowance accounts for the years ended December 31,
2007, 2006 and 2005 was as follows (in thousands):



|     |  |                              |       |                              |      |   |            |      |   |        |       |                         |   |      
|---- |  | ---------------------------- | ----- | ---------------------------- | ---- | - | ---------- | ---- | - | ------ | ----- | ----------------------- | - | -----
|     |  | Doubtful Accounts           
|     |  | Balance atBeginning ofPeriod |       | Charged to Costsand Expenses |      |   | Deductions |      |   | Other* |       | Balance at End ofPeriod
|2005 |  | $                            | 3,511 |                              | 897  |   |            | (9   | ) |        | 730   |                         | $ | 5,129
|2006 |  | $                            | 5,129 |                              | 48   |   |            | (869 | ) |        | 1,210 |                         | $ | 5,518
|2007 |  | $                            | 5,518 |                              | (372 | ) |            | (936 | ) |        | 1,943 |                         | $ | 6,153



|* | Other represents doubtful account reserves recorded as part of Net Revenues for estimated customer disallowances. In 2005, other contained the adjustment for the divestiture of our
METI subsidiary. In 2006, we added $25 thousand from the addition of GRS Solutions, Inc. In 2007, we added $433 thousand from the addition of SRS Technologies and $272 thousand from the addition of McDonald Bradley.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|     |  |                              |       |                              |      |   |            |      |   |       |        |   |                         |   |      
|---- |  | ---------------------------- | ----- | ---------------------------- | ---- | - | ---------- | ---- | - | ----- | ------ | - | ----------------------- | - | -----
|     |  | Deferred Tax Asset Valuation
|     |  | Balance atBeginning ofPeriod |       | Charged to Costsand Expenses |      |   | Deductions |      |   | Other |        |   | Balance at End ofPeriod
|2005 |  | $                            |      |                              |     |   |            |     |   |       | 1,352  |   |                         | $ | 1,352
|2006 |  | $                            | 1,352 |                              |     |   |            |     |   |       | 611    |   |                         | $ | 1,963
|2007 |  | $                            | 1,963 |                              | (264 | ) |            |     |   |       | (1,699 | ) |                         | $ |     
|     | 
|     |  | Other Valuation Accounts ** 
|     |  | Balance atBeginning ofPeriod |       | Charged to Costsand Expenses |      |   | Deductions |      |   | Other |        |   | Balance at End ofPeriod
|2005 |  | $                            | 250   |                              | 300  |   |            |     |   |       |       |   |                         | $ | 550  
|2006 |  | $                            | 550   |                              |     |   |            |     |   |       |       |   |                         | $ | 550  
|2007 |  | $                            | 550   |                              | (19  | ) |            | (531 | ) |       |       |   |                         | $ |     



|** | Other valuation accounts are for inventory.
|-- | -------------------------------------------



94