Document:

Exhibit 10.7.1

 Exhibit 10.7.1 
 FIRST AMENDMENT TO LEASE 
 THIS FIRST AMENDMENT TO LEASE is made this 2nd day of October, 2002, by and between GLENN DALE BUSINESS CENTER, L.L.C (the “Landlord”) and TVI CORPORATION (the
“Tenant”). 
 RECITAL 
 A. Landlord and Tenant entered into a Lease dated February 16, 1998 (the “Lease”) for certain premises containing approximately 17,000 square feet (the “Existing Premises”) which are located within a building known
as Glenn Dale Business Center, 7100 Holiday Tyler Road, Glen Dale, Maryland. 
 B. Tenant desires to relocate to a larger area comprising
approximately 30,696 square feet within the Glenn Dale Business Center (the “New Premises”). 
 C. Landlord and Tenant desire to
amend and extend the Lease to permit Tenant to relocate to the New Premises upon the terms and conditions set forth in this First Amendment. 
 NOW, THEREFORE, for and in consideration of the premises and of other good and valuable consideration, receipt of which is hereby acknowledged, the parties hereto agree as follows: 
 1. Recitals. The Recitals noted above are hereby incorporated into and made a part of this First Amendment to Lease. 
 2. Relocation. Landlord and Tenant agree that Tenant shall vacate the Existing Premises and relocate to the New Premises, as indicated on First
Amendment Exhibit A, attached hereto and made a part hereof. The effective date of such relocation (the “Relocation Commencement Date”) shall be the later of November l8, 2002, or the delivery of the New Premises to Tenant by
Landlord (which Landlord estimates shall be forty five (45) days after this First Amendment to Lease has been fully executed), and thereafter the New Premises shall be deemed the ‘Premises” under the Lease. 
 3. Lease Term. The Lease term is scheduled to expire March 1, 2003; it shall be amended to extend for a period of five (5) years
thereafter (unless the Relocation Commencement Date is a date other than the first day of a calendar month, in which case the Lease term shall continue for the balance of the month in which the Relocation Commencement Date occurs and for a period of
five (5) years thereafter), unless the lease term is terminated earlier in accordance with the provisions of the Lease. 
 4.
Rent. Commencing upon the Relocation Commencement Date, Tenant agrees to pay Landlord the annual rent of Four Dollars and Fifty Cents ($4.50) per square foot or One Hundred Thirty Eight Thousand One Hundred Thirty Two Dollars ($138,132.00)
per annum payable in advance, in equal monthly installments, as follows: Eleven Thousand Five Hundred Eleven Dollars ($11,511.00), per month, on the first day of each and every month during the term of this Lease, without setoff, recoupment, or
deduction, for the first lease year thereof; thereafter, effective upon each anniversary of the Relocation Commencement Date, rent shall increase per annum by two percent (2%) over the rent payable for the preceding lease year. If the
Relocation Commencement Date shall commence on a date other than the first day of a month, the rental for the period from the Relocation Commencement Date to the first day of the next full calendar month of the term shall be prorated and shall be
payable on the first day of the term. 
 5. Landlord Work. Landlord agrees, at its cost and expense, to perform the following with
respect to the New Premises (collectively, “Landlord’s Work”) prior to delivering the New Premises to tenant: 
  

	 	1.	Clean and paint existing office; 

  

	 	2.	Replace existing carpet; 

  

	 	3.	Clean and paint restrooms, and service, as needed, plumbing fixtures; 

  

	 	4.	Service all heating, ventilation, and air conditioning equipment; 

  

	 	5.	Demo portion of office in warehouse area; 

  

	 	6.	Clean and seal warehouse floor; 

  

	 	7.	Create warehouse access to break room; 

  

	 	8.	Install one (1) sink in the break room; 

  

	 	9.	Existing electrical service (no upgrade) 

 Except for the work specifically enumerated above, Landlord shall have to obligation to perform any work
in the New Premises in connection with Tenant’s initial build-out as such work shall be the sole obligation of Tenant at Tenant’s sole cost and expense. 
 6. Additional Charges. Tenant currently pays its proportionate share of real Estate Taxes, Common Facilities Costs and Insurance pursuant to the Lease. As of the Relocation Commencement Date, Tenant’s
proportionate share shall be increased to 30,696/310,000 or 9.902%. 
 7. Broker. Each of the parties represents and warrants that
there are no claims brokerage commissions or finder’s fees in connection with the execution of this First Amendment to Lease, and each of the parties agrees to indemnify and save harmless the other party from and against all liabilities arising
from any such claim including, without limitation, the cost of attorney’ fees in connection therewith. 
 8. Signage. Within
fifteen (15) days of the Relocation Commencement Date, Tenant shall at its sole cost and expense install signage indicating the name of its business above the front entrance and rear door of the New Premises. The size and lettering thereof
shall be in building standard color and subject to Landlord’s prior written approval. 
 9. Right of First Refusal. Before
entering into any lease for the 10,000 square feet adjacent to the New Premises (as shown on First Amendment Exhibit B as “Right of First Refusal Premises”), and so long as Tenant is not then in default under the lease, Landlord will
notify Tenant of the availability of the Right of First Refusal Premises amid shall offer to lease the same to Tenant at the same per square foot rate Tenant is then paying for the New Premises, subject the same subsequent rental increases as noted
herein for the New Premises. If within five (5) business days after receipt of Landlord’s notice, Tenant agrees in writing to lease the said space, Landlord and Tenant will amend the Lease for such space within ten (10) business days,
after Landlord’s receipt of Tenant’s notice of intent to lease on all the same terms as this Lease except for matters dependent upon the size of the premises such as the amount of common area expense and security deposit. If Tenant does
not deliver its notice of intent to lease such space offered in Landlord’s notice within such five (5) business day period, or if Landlord and Tenant do not enter into a fully executed amendment far such space within such ten
(10) business day period, then this right of first refusal to lease the space will lapse and be of no further force and effect, and Landlord will have the right to lease the space to a third party on the same or other terms and conditions. Once
Tenant accepts Landlord’s offer (whether for all of the Right at First Refusal Premises or only a portion), this right of first refusal will lapse and be of no further force and effect with respect to the entire First Right & Refusal
Premises. This right of first refusal is personal to TVI Corporation and is non-transferable. Time is of the essence. 
 10. Parking.
Tenant shall have the use of fifty (50) parking spaces. Twenty (20) spaces will be on the front parking lot and thirty (30) spaces will be on the lower lot, as marked on First Amendment Exhibit C, attached hereto and made a part
hereof 
 11. General. Except as otherwise expressly amended herein, all other terms and Conditions of the Lease shall remain
unchanged and in full force and effect. In the event of any conflict between the terms of the Lease and the terms of this First Amendment, the terms of this First Amendment shall control. All undefined capitalized terms contained herein shall have
the definitions assigned to them in the Lease. 
 BALANCE OF PAGE INTENTIONALLY BLANK 

 IN WITNESS WHEREOF, the parties hereto have executed this First Amendment to Lease under their respective
hands and seals as of the day and year first above written. 
  

							
	WITNESS	  	 LANDLORD
 GLENN DALE BUSINESS CENTER,
L.L.C.
	 	
				
	  
	  	By:	 	  
	 	(SEAL)
			
	WITNESS	  	 TENANT
 TVI CORPORATION
	 	
				
	  
	  	By:	 	 /s/ Richard Priddy
	 	(SEAL)
		  	Name:	 	Richard Priddy	 	
		  	Title:	 	CEO	 	

 STATE OF MARYLAND, COUNTY OF BALTIMORE, to wit: 
 On this             day of
                     , 2002, before me, the subscribed, a Notary Public of the state aforesaid, personally appeared LAWRENCE G. RIEF, Member
of the above-named Landlord, and he acknowledged the above First Amendment to Lease to be the act of the Landlord. 
 IN WITNESS WHEREOF, I
hereunto set my hand and Notarial Seal. 
  

	
	  

	My	commission expires:                      

 STATE OF MARYLAND, COUNTY OF PRINCE GEORGES, to wit: 
 On this 2nd day of October, 2002, before me, the subscribed, a Notary Public of the
state aforesaid, personally appeared RICHARD PRIDDY, [insert name and title] of the above-named Tenant, and he acknowledged the above First Amendment to Lease to be the act of the Tenant. 
 IN WITNESS WHEREOF, I hereunto set my hand and Notarial Seal. 
  

	
	 /s/ Portia Power

	Portia Power

 My commission expires: May 1, 2005 

 FIRST AMENDMENT EXHIBIT A – Plan Showing Leased Premises 
 Graphic Omitted 

 FIRST AMENDMENT EXHIBIT B – Plan Showing Right of First Refusal Premises

 Graphic Omitted 

 FIRST AMENDMENT EXHIBIT C – Plan Showing Parking Lot 
 Graphic OmittedExhibit 10.7.2

 Exhibit 10.7.2 
 SECOND AMENDMENT TO LEASE 
 THIS SECOND AMENDMENT TO LEASE (hereinafter, the “Second
Amendment”) is made this 16th day of January, 2004, by and between GLENN DALE BUSINESS CENTER, L.L.C., a Maryland limited liability company, having an office at c/o Continental Realty Corporation, 1427 Clarkview Road, Suite 500, Baltimore,
Maryland 21209-2100, as landlord (the “Landlord”) and TVI CORPORATION, a Maryland corporation, having an office at 7100 Holiday Tyler Road, Glenn Dale, Maryland 20769, as tenant (the “Tenant”). 
 RECITALS: 
 A. Landlord and
Tenant entered into a Lease dated February 16, 1998 (as amended by a First Amendment to Lease dated December 10, 2002, the “Lease”) for certain premises containing 63,839 square feet and known as Suite 200 (7100 Holiday Tyler
Road, Suite 200, Glenn Dale, Maryland 20769, the “Premises”) which are located in the Glenn Dale Business Center. 
 B. Landlord
and Tenant desire to expand the Premises to include the adjacent space containing 20,797 square feet and to further amend the Lease based upon the terms and conditions set forth in this Second Amendment. The total square footage of the Premises as
of the Expansion Commencement Date (as herein (defined) shall be 84,636 square feet. 
 NOW, THEREFORE, for and in consideration of the
premises and of other good and valuable consideration, receipt of which is hereby acknowledged, the parties hereto agree as follows: 
 1.
Recitals. The Recitals noted above are hereby incorporated into and made part of this Second Amendment, 
 2. Expansion of
Premises. Tenant agrees that it shall expand the Premises to include the 20,797 square feet of space immediately adjacent to Suite No. 200 (the “Expansion Premises”), which is shaded with diagonal lines on the drawing attached
hereto as Second Amendment Exhibit A and made a part hereof. The expansion shall be effective on the date the Landlord delivers the Expansion Premises to Tenant, which Landlord estimates shall be March 1, 2004 (the “Expansion Commencement
Date”). Landlord shall (1) demise the Expansion Premises, (2) paint the interior walls, and (3) open up two (2) 10 foot by 10 foot knock out panels in the demising wall at its sole cost and expense prior to delivering the
Expansion Premises to Tenant. All other work necessary to prepare the Expansion Premises for Tenant’s use shall be the sole responsibility of Tenant at Tenant’s sole cost mid expense. Tenant shall obtain Landlord’s written approval of
Tenant’s plans and specifications for any Tenant work in the Expansion Premises before commencing any such work; such approval shall not be unreasonably withheld or delayed by Landlord. Effective as of the Expansion Commencement Date, all
references in the Lease to the “Premises” shall be deemed to include the Expansion Premises. 
 3. Extension of Existing Lease
Term. The existing Lease Term, currently scheduled to expire on March 31, 2008, shall be extended as of the Expansion Commencement Date to terminate on February 28, 2009 (the “Extended Term”), unless terminated earlier in
accordance with the provisions of the Lease. The Extended Term shall be on the same terms, covenants and conditions as the original term, except that the Minimum Rent shall be adjusted as provided herein, and there shall be no further right of
renewal after the Extended Term except as specifically provided for herein. 
 4. Minimum Rent. Commencing on the Expansion
Commencement Date, the Minimum Rent for the Premises for the Extended Term shall be as shown on the table below. 
 (a) For the 63,839 square
feet of space in Suite 200, Tenant agrees to pay Landlord: 
  

										
	 Payment Period
	  	 Minimum Rent
 Per
 Square Foot
	  	Annual Minimum
Rent	  	 Monthly Minimum
 Rent Payment

	 Expansion Commencement Date Through 01/31/05
	  	$	4.59	  	$	293,021.01	  	$	24,418.42
	 02/01/05 – 01/31/06
	  	$	4.68	  	$	298,766.52	  	$	24,897.21
	 02/01/06 – 01/31/07
	  	$	4.77	  	$	304,512.03	  	$	25,376.00
	 02/01/07 – 01/31/08
	  	$	4.87	  	$	310,895.93	  	$	25,908.00
	 02/01/08 – 02/28/09
	  	$	4.97	  	$	317,279.83	  	$	26,439.99

 (b) For the 20,797 square feet of space in the Expansion Premises, tenant agrees to pay Landlord:

  

										
	 Payment Period
	  	 Minimum Rent
Per
 Square Foot
	  	Annual Minimum
Rent	  	Monthly Minimum
Rent Payment
	 Expansion Commencement Date Through 02/28/05
	  	$	5.50	  	$	114,384.50	  	$	9,531.96
	 03/01/05 – 02/28/06
	  	$	5.61	  	$	116,671.17	  	$	9,722.60
	 03/01/06 – 02/28/07
	  	$	5.72	  	$	118,958.84	  	$	9,913.24
	 03/01/07 – 02/29/08
	  	$	5.83	  	$	121,246.51	  	$	10,103.88
	 03/01/08 – 02/28/09
	  	$	5.95	  	$	123,742.15	  	$	10,311.85

 (c) Therefore, the Tenant’s monthly payment obligation pursuant to (a) and
(b) above for the Lease Term shall be as follows: 
  

				
	 Payment Period
	  	Monthly Minimum
Rent Payment
	 Expansion Commencement Date Through 01/31/05
	  	$	33,950.38
	 02/01/05 – 02/28/05
	  	$	34,429.17
	 03/01/05 – 01/31/06
	  	$	34,619.81
	 02/01/06 – 02/28/06
	  	$	35,098.60
	 03/01/06 – 01/31/07
	  	$	35,289.24
	 02/01/07 – 02/28/07
	  	$	35,821.24
	 03/01/07 – 01/31/08
	  	$	36,011.88
	 02/01/08 – 02/29/08
	  	$	36,543.87
	 03/01/08 – 02/28/09
	  	$	36,751.84

 5. Security Deposit. Landlord hereby acknowledges that it currently holds Twenty Three
Thousand Nine Hundred Thirty Nine and 63/100 Dollars ($23,939.63) previously paid by Tenant as security for the faithful performance by Tenant of all of the terms, covenants and conditions of the Lease. Tenant agrees to pay Landlord an additional
security deposit at Nine Thousand Five Hundred Thirty One Dollars ($9,531 .00) contemporaneously with its execution of this Second Amendment. Upon Landlord’s receipt of such payment, the total security deposit on account for Tenant under the
Lease shall be Thirty Three Thousand Four Hundred Seventy and 63/100 Dollars ($33,470.63). 
 6. Additional Charges. Tenant currently
pays its proportionate share of Real Estate Taxes Common Facilities Costs and Insurance pursuant to the Lease. As at the Expansion Commencement Date, Tenant’s proportionate share shall be increased to 84,636/310,000, or 27.3%. 
 7. Parking. Tenant shall have the use of seventy (70) parking spaces, as marked on Second Amendment Exhibit B, attached hereto and made a
part hereof. 
 8. Broker. Each of the parties represents and warrants that there are no claims for brokerage commissions or
finder’s fees in connection with the execution of this Second Amendment, and each of the parties agrees to indemnify and save harmless the other party from and against all liabilities arising from any such claim including, without limitation,
the cost at attorneys’ fees in connect ion therewith. 
 9. General. Except as otherwise expressly amended herein, all other
terms and conditions of the lease shall remain unchanged and in full force and effect. In the event of any conflict between the terms of the Lease and the terms of this Second Amendment, the terms of this Second Amendment shall control. All
undefined capitalized terms cant a med herein shall have the definitions assigned to them in the Lease. 
 BALANCE OF PAGE INTENTIONALLY BLANK

 IN WITNESS WHEREOF, the parties hereto have executed this Second Amendment a Lease under their respective
hands and seals as of the day and year first above written. 
  

							
	WITNESS:	  	 LANDLORD:
 GLENN DALE BUSINESS

CENTER, L.L.C.

		  	By:	 	GDBC Manager. Inc., its Manager	 	
				
	 /s/ Shanna M. Hayward
	  	By:	 	 /s/ Lawrence G. Rief
	 	(SEAL)
		  		 	Lawrence G. Rief, Vice President	 	
			
	WITNESS:	  	TENANT:	 	
		  	TVI CORPORATION	 	
				
	  
	  	By:	 	 /s/ Richard V. Priddy
	 	(SEAL)
		  	Name:	 	Richard V. Priddy	 	
		  	Title:	 	President and CEO	 	

 STATE OF MARYLAND, COUNTY OF BALTIMORE, to wit: 
 On this 21st day of
January, 2004, before me, the subscribed, a Notary Public of the State aforesaid, personally appeared 
 LAWRENCE RIEF, 
 Vice President of the Manager for the above-named Landlord, and he acknowledged the above Second Amendment to lease to be the act of the Landlord. 
 IN WITNESS WHEREOF, I hereunto set my hand and Notarial Seal. 
  

	
	 /s/ Shanna M. Hayward

 My commission expires: 11/1/2007 
 STATE OF MARYLAND, COUNTY OF BALTIMORE, to wit: 
 On this 16th day of January, 2004, before me, the subscribed, a Notary Public of the State aforesaid personally appeared 
 Richard J. Priddy [Name], President and CEO [Title] 
 of the above-named
Tenant, and s/he acknowledged the above Second Amendment to Lease to be the act of the Tenant. 
 IN WITNESS WHEREOF, I hereunto set my hand
and Notarial Seal. 
  

	
	 /s/ Madeline M. McCormick

 My commission expires: Sept. 25, 2007 

 SECOND AMENDMENT EXHIBIT A – Plan Showing Expansion Premises 
 Graphic Omitted 

 SECOND AMENDMENT EXHIBIT B– Plan Showing Parking Lot 
 Graphic Omitted

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