(1) may not retire any B–52 aircraft, other than 
the aircraft with tail number 61–0025; and 
(2) shall maintain not less than 44 such aircraft 
as combat-coded aircraft. 
(b) TERMINATION.—For purposes of subsection (a), the 
date specified in this subsection is the earlier of— 
(1) January 1, 2018; and 
(2) the date as of which a long-range strike re-
placement aircraft with equal or greater capability 
than the B–52H model aircraft has attained initial 
operational capability status. 
SEC. 132. STRATEGIC AIRLIFT FORCE STRUCTURE. 
(a) REQUIRED FORCE STRUCTURE.— 
(1) MINIMUM NUMBER OF AIRCRAFT.—Effective 
October 1, 2008, the Secretary of the Air Force shall 
maintain a total aircraft inventory of strategic airlift 
aircraft of not less than 299 aircraft. 
(2) DEFINITIONS.—For purposes of this sub-
section: 
(A) The term ‘‘strategic airlift aircraft’’ 
means an aircraft that has a cargo capacity of 
at least 150,000 pounds and that is capable of 
transporting outsized cargo an unrefueled range 
of at least 2,400 nautical miles. 
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(B) The term ‘‘outsized cargo’’ means any 
single item of equipment that exceeds 1,090 
inches in length, 117 inches in width, or 105 
inches in height. 
(b) REPEAL OF LIMITATION ON RETIREMENT OF C– 
5 AIRCRAFT.—Section 132 of the National Defense Author-
ization Act for Fiscal Year 2004 (Public Law 108–136; 117 
Stat. 1411) is repealed. 
SEC. 133. LIMITATION ON RETIREMENT OF U–2 AIRCRAFT. 
(a) FISCAL YEAR 2007.— The Secretary of the Air 
Force may not retire any U–2 aircraft of the Air Force 
in fiscal year 2007. 
(b) YEARS AFTER FISCAL YEAR 2007.—After fiscal 
year 2007, the Secretary of the Air Force may retire a U– 
2 aircraft only if the Secretary of Defense certifies to Con-
gress that the U–2 intelligence, surveillance, and reconnais-
sance (ISR) capability provided by the U–2 aircraft no 
longer contributes to mitigating any gaps in ISR capabili-
ties identified in the 2006 Quadrennial Defense Review. No 
action may be taken by the Department of Defense to retire 
(or to prepare to retire) any U–2 aircraft— 
(1) before such a certification is submitted to 
Congress; or 
(2) during the 60-day period beginning on the 
date on which such a certification is submitted. 
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SEC. 134. MULTIYEAR PROCUREMENT AUTHORITY FOR F– 
22A RAPTOR FIGHTER AIRCRAFT. 
(a) MULTIYEAR AUTHORITY.—The Secretary of the 
Air Force may enter into a multiyear contract for the pro-
curement of up to 60 F–22A Raptor fighter aircraft begin-
ning with the 2007 program year, 
(b) 
COMPLIANCE
WITH
LAW
APPLICABLE
TO 
MULTIYEAR CONTRACTS.—A contract under subsection (a) 
for the procurement of F–22A aircraft shall be entered into 
in accordance with section 2306b of title 10, United States 
Code, except that, notwithstanding subsection (k) of that 
section, such a contract may not be for a period in excess 
of three program years. 
(c) REQUIRED CERTIFICATIONS.—In the case of a con-
tract under subsection (a) for the procurement of F–22A 
aircraft, a certification under subsection (i)(1)(A) of section 
2306b of title 10, United States Code, with respect to that 
contract may only be submitted if the certification includes 
an additional certification that each of the conditions speci-
fied in subsection (a) of that section has been satisfied with 
respect to that contract. 
(d) NOTICE-AND-WAIT REQUIREMENT.—Upon submis-
sion to Congress of a certification referred to in subsection 
(c) with respect to a proposed contract under subsection (a) 
for the procurement of F–22A aircraft, the contract may 
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then be entered into only after a period of 30 days has 
elapsed after the date of the submission of the certification. 
SEC. 135. LIMITATION ON RETIREMENT OF KC–135E AIR-
CRAFT DURING FISCAL YEAR 2007. 
(a) LIMITATION.—The number of KC–135E aircraft 
retired by the Secretary of the Air Force during fiscal year 
2007 may not exceed 29. 
(b) TREATMENT OF RETIRED AIRCRAFT.—The Sec-
retary of the Air Force shall maintain each KC–135E air-
craft that is retired by the Secretary after September 30, 
2006, in a condition that would allow recall of that aircraft 
to future service in the Air Force Reserve, Air National 
Guard, or active forces aerial refueling force structure. 
SEC. 136. LIMITATION ON RETIREMENT OF F–117A AIR-
CRAFT DURING FISCAL YEAR 2007. 
(a) LIMITATION.—The number of F–117A aircraft re-
tired by the Secretary of the Air Force during fiscal year 
2007 may not exceed 10. 
(b) TREATMENT OF RETIRED AIRCRAFT.—The Sec-
retary of the Air Force shall maintain each F–117A air-
craft that is retired by the Secretary after September 30, 
2006, in a condition that would allow recall of that aircraft 
to future service. 
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TITLE II—RESEARCH, DEVELOP-
MENT, TEST, AND EVALUA-
TION 
Subtitle A—Authorization of Appropriations 
Sec. 201. Authorization of appropriations. 
Sec. 202. Amount for defense science and technology. 
Subtitle B—Program Requirements, Restrictions, and Limitations 
Sec. 211. Alternate engine for Joint Strike Fighter. 
Sec. 212. Extension of authority to award prizes for advanced technology achieve-
ments. 
Sec. 213. Extension of Defense Acquisition Challenge Program. 
Sec. 214. Future Combat Systems milestone review. 
Sec. 215. Independent cost analyses for Joint Strike Fighter engine program. 
Sec. 216. Dedicated amounts for implementing or evaluating DD(X) and CVN– 
21 proposals under Defense Acquisition Challenge Program. 
Subtitle C—Ballistic Missile Defense 
Sec. 221. Fielding of ballistic missile defense capabilities. 
Sec. 222. Limitation on use of funds for space-based interceptor. 
Subtitle D—Other Matters 
Sec. 231. Review of test and evaluation policies and practices to address emerging 
acquisition approaches. 
Subtitle A—Authorization of 
Appropriations 
SEC. 201. AUTHORIZATION OF APPROPRIATIONS. 
Funds are hereby authorized to be appropriated for fis-
cal year 2007 for the use of the Department of Defense for 
research, development, test, and evaluation as follows: 
(1) For the Army, $10,932,209,000. 
(2) For the Navy, $17,377,769,000. 
(3) For the Air Force, $24,810,041,000. 
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(4) For Defense-wide activities, $20,944,559,000, 
of which $181,520,000 is authorized for the Director 
of Operational Test and Evaluation. 
SEC. 202. AMOUNT FOR DEFENSE SCIENCE AND TECH-
NOLOGY. 
(a) FISCAL YEAR 2007.—Of the amounts authorized 
to be appropriated by section 201, $11,735,555,000 shall be 
available for the Defense Science and Technology Program, 
including basic research, applied research, and advanced 
technology development projects. 
(b) BASIC RESEARCH, APPLIED RESEARCH, AND AD-
VANCED TECHNOLOGY DEVELOPMENT DEFINED.—For pur-
poses of this section, the term ‘‘basic research, applied re-
search, and advanced technology development’’ means work 
funded in program elements for defense research and devel-
opment under Department of Defense category 6.1, 6.2, or 
6.3. 
Subtitle B—Program Requirements, 
Restrictions, and Limitations 
SEC. 211. ALTERNATE ENGINE FOR JOINT STRIKE FIGHTER. 
Of the funds authorized to be appropriated for the De-
partments of the Navy and Air Force for the system develop-
ment and demonstration program for the Joint Strike 
Fighter, not less than $408,000,000 shall be obligated for 
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continued development of an alternate engine for the Joint 
Strike Fighter. 
SEC. 212. EXTENSION OF AUTHORITY TO AWARD PRIZES 
FOR 
ADVANCED 
TECHNOLOGY 
ACHIEVE-
MENTS. 
Section 2374a(f) of title 10, United States Code, is 
amended by striking ‘‘September 30, 2007’’ and inserting 
‘‘September 30, 2010’’. 
SEC. 213. EXTENSION OF DEFENSE ACQUISITION CHAL-
LENGE PROGRAM. 
(a) EXTENSION.—Section 2359b of title 10, United 
States Code, is amended by striking subsection (j). 
(b) 
CONFIDENTIALITY.—Such 
section 
is 
further 
amended in subsection (g)— 
(1) by amending the heading to read as follows: 
‘‘CONFLICTS
OF
INTEREST
AND
CONFIDENTIAL-
ITY.—’’; and 
(2) by inserting before the period at the end the 
following: ‘‘and that the identity of any person or ac-
tivity submitting a challenge proposal is not disclosed 
outside the Federal Government without the consent of 
the person or activity’’. 
SEC. 214. FUTURE COMBAT SYSTEMS MILESTONE REVIEW. 
(a) MILESTONE REVIEW REQUIRED.—After the pre-
liminary design review of the Future Combat Systems pro-
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gram, but in no event later than the end of fiscal year 2008, 
the Secretary of Defense shall carry out a Defense Acquisi-
tion Board milestone review of the Future Combat Systems 
program. The milestone review shall include an assessment 
as to each of the following: 
(1) Whether the warfighter’s needs are valid and 
can be best met with the concept of the program. 
(2) Whether the concept of the program can be 
developed and produced within existing resources. 
(3) Whether the program should continue. 
(b) DETERMINATIONS TO BE MADE IN ASSESSING 
WHETHER PROGRAM SHOULD CONTINUE.—In making the 
assessment required by subsection (a)(3), the Secretary shall 
make a determination with respect to each of the following: 
(1) Whether each critical technology for the pro-
gram is at least Technical Readiness Level 6. 
(2) For each system and network component of 
the program, what the key design and technology risks 
are, based on System Functional Reviews, Prelimi-
nary Design Reviews, and Technical Readiness Lev-
els. 
(3) Whether actual demonstrations, rather than 
simulations, have shown that the concept of the pro-
gram will work. 
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(4) Whether actual demonstrations, rather than 
plans, have shown that the software for the program 
is functional. 
(5) What the cost estimate for the program is. 
(6) What the affordability assessment for the pro-
gram is, based on that cost estimate. 
(c) REPORT.—The Secretary shall submit to the con-
gressional defense committees a report on the findings and 
conclusions of the milestone review required by subsection 
(a). The report shall include, and display, each of the assess-
ments required by subsection (a) and each of the determina-
tions required by subsection (b). 
(d) RESTRICTION
ON
FUNDS
EFFECTIVE
FISCAL 
2009.—For fiscal years beginning with 2009, the Secretary 
may not obligate any funds for the Future Combat Systems 
program until after the report required by subsection (c) 
is submitted. 
SEC. 215. INDEPENDENT COST ANALYSES FOR JOINT 
STRIKE FIGHTER ENGINE PROGRAM. 
(a) INDEPENDENT COST ANALYSES.—A comprehensive 
and detailed cost analysis of the Joint Strike Fighter engine 
program shall be independently performed by the Comp-
troller General and by the Secretary of Defense, acting 
through the Cost Analysis Improvement Group of the Office 
of the Secretary of Defense. The cost analysis shall cover— 
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(1) an alternative under which the aircraft are 
capable of using the F135 engine only; 
(2) an alternative under which the aircraft are 
capable of using either the F135 engine or the F136 
engine, and is carried out on a competitive basis; and 
(3) any other alternative, whether competitive or 
sole source, that would reduce total life-cycle cost, im-
prove program schedule, or both. 
(b) REPORTS.—Not later than March 15, 2007, each 
official specified in subsection (a) shall independently sub-
mit to the congressional defense committees a report on the 
cost analysis carried out by that official under subsection 
(a). Each report shall include each of the following matters: 
(1) The key assumptions used in carrying out 
the cost analysis. 
(2) The methodology and techniques used in car-
rying out the cost analysis. 
(3) For each alternative under subsection (a)— 
(A) a comparison of the life-cycle costs, in-
cluding costs in current and constant collars and 
a net-present-value analysis; and 
(B) estimates of— 
(i) supply, maintenance, and other op-
erations manpower required to support the 
alternative; 
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(ii) the number of flight hours required 
to achieve engine maturity and in what 
year that is expected to be achieved; and 
(iii) the total number of engines ex-
pected to be procured over the lifetime of the 
Joint Strike Fighter program. 
(4) The acquisition strategies that were used for, 
and the experience with respect to cost, schedule, and 
performance under past acquisition programs for en-
gines for tactical fighter aircraft, including the F–15, 
F–16, F–18, and F–22. 
(5) A comparison of the experiences under past 
engine acquisition programs carried out on a sole- 
source basis, and those carried out on a competitive 
basis, with respect to performance, savings, maintain-
ability, reliability, and technical innovation. 
(6) Conclusions and recommendations. 
(c) CERTIFICATION BY COMPTROLLER GENERAL.—In 
submitting the report required by subsection (b), the Comp-
troller General shall also submit a certification as to wheth-
er the Comptroller General had access to sufficient informa-
tion to enable the Comptroller General to make informed 
judgments on the matters required to be included in the re-
port. 
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(d) LIFE-CYCLE COSTS DEFINED.—In this section, the 
term ‘‘life-cycle costs’’ includes those elements of cost that 
would be considered for a life-cycle cost analysis for a major 
defense acquisition program, such as procurement of en-
gines, procurement of spare engines, and procurement of en-
gine components and parts, and also includes good-faith es-
timates of routine engine costs, such as performance up-
grades and component improvement, that historically have 
occurred in tactical fighter engine programs. 
SEC. 216. DEDICATED AMOUNTS FOR IMPLEMENTING OR 
EVALUATING DD(X) AND CVN–21 PROPOSALS 
UNDER DEFENSE ACQUISITION CHALLENGE 
PROGRAM. 
(a) AMOUNTS REQUIRED.—Of the amounts appro-
priated pursuant to the authorization of appropriations in 
section 201(4) for research, development, test, and evalua-
tion, Defense-wide, $4,000,000 shall be available only to im-
plement or evaluate challenge proposals specified in sub-
section (b). 
(b) CHALLENGE PROPOSALS COVERED.—A challenge 
proposal referred to in subsection (a) is a proposal under 
the Defense Acquisition Challenge Program established by 
section 2359b of title 10, United States Code, that relates 
to— 
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(1) the DD(X) next-generation destroyer pro-
gram; or 
(2) the CVN–21 next-generation aircraft carrier 
program. 
Subtitle C—Ballistic Missile 
Defense 
SEC. 221. FIELDING OF BALLISTIC MISSILE DEFENSE CAPA-
BILITIES. 
Upon approval by the Secretary of Defense, funds au-
thorized to be appropriated for fiscal years 2007 and 2008 
for research, development, test, and evaluation for the Mis-
sile Defense Agency may be used for the development and 
fielding of ballistic missile defense capabilities. 
SEC. 222. LIMITATION ON USE OF FUNDS FOR SPACE-BASED 
INTERCEPTOR. 
(a) LIMITATION.—No funds appropriated or other wise 
made available to the Department of Defense may be obli-
gated or expended for the testing or deployment of a space- 
based interceptor until 90 days after the date on which a 
report described in subsection (c) is submitted. 
(b) SPACE-BASED INTERCEPTOR DEFINED.—For pur-
poses of this section, the term ‘‘space-based interceptor’’ 
means a kinetic or directed energy weapon that is stationed 
on a satellite or orbiting platform and that is intended to 
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destroy another satellite in orbit or a ballistic missile 
launched from earth. 
(c) REPORT.—A report described in this subsection is 
a report prepared by the Director of the Missile Defense 
Agency and submitted to the congressional defense commit-
tees containing the following: 
(1) A description of the essential components of 
a proposed space-based interceptor system, including 
a description of how the system proposed would en-
hance or complement other missile defense systems. 
(2) An estimate of the acquisition and life-cycle 
cost of the system described under paragraph (1), in-
cluding lift cost and periodic replacement cost due to 
depreciation and attrition. 
(3) An analysis of the vulnerability of such a 
system to counter-measures, including direct ascent 
and co-orbital interceptors, and an analysis of the 
functionality of such a system in the aftermath of a 
nuclear detonation in space. 
(4) A projection of the foreign policy and na-
tional security implications of a space-based inter-
ceptor program, including the probable response of 
United States adversaries and United States allies. 
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Subtitle D—Other Matters 
SEC. 231. REVIEW OF TEST AND EVALUATION POLICIES AND 
PRACTICES TO ADDRESS EMERGING ACQUISI-
TION APPROACHES. 
(a) REVISION TO REPORT REQUIREMENT.—Section 
2399(b)(2)(B) of title 10, United States Code, is amended 
by striking ‘‘tested are effective and suitable for combat’’ 
and inserting the following: ‘‘tested— 
‘‘(i) are effective and suitable for combat in 
accordance with the users’ standards for effective-
ness and suitability as reflected in the require-
ments process; or 
‘‘(ii) are operationally acceptable under cer-
tain restricted conditions, as delineated by the 
Director.’’. 
(b) REVIEW OF TEST AND EVALUATION POLICIES.— 
(1) IN GENERAL.—The Under Secretary of De-
fense for Acquisition, Technology, and Logistics, in 
coordination with the Director of Operational Test 
and Evaluation and the Director of the Defense Test 
Resource Management Center, shall conduct a review 
of test and evaluation policies and practices of the 
Department of Defense and issue such new or revised 
guidance as may be necessary to address emerging ac-
quisition approaches. 
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(2) ISSUES TO BE ADDRESSED.—The issues to be 
addressed by the Under Secretary in the review under 
paragraph (1) shall include, at a minimum, appro-
priate polices and practices for— 
(A) ensuring the adequacy and the expedi-
ency of test and evaluation activities with regard 
to— 
(i) items that are acquired pursuant to 
the rapid acquisition authority in section 
806 of the Bob Stump National Defense Au-
thorization Act for Fiscal Year 2003 (10 
U.S.C. 2302 note); 
(ii) programs that are conducted pur-
suant to the spiral development authority 
in section 803 of the Bob Stump National 
Defense Authorization Act for Fiscal Year 
2003 (10 U.S.C. 2430 note) (or other au-
thority for the conduct of incremental ac-
quisition programs) ; 
(iii) systems that are acquired pursu-
ant to other emerging acquisition ap-
proaches, as approved by the Under Sec-
retary; and 
(iv) materiel that is not subject to the 
operational test and evaluation require-
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