Sixth Supplemental Indenture to 2.00% Senior Subordinated Convertible Notes Due 2024 – Armor Holdings, Inc. and U.S. Bank National Association

 EXHIBIT 4.4 SIXTH SUPPLEMENTAL INDENTURE SIXTH SUPPLEMENTAL INDENTURE, dated as of June 30, 2006 (the "SIXTH SUPPLEMENTAL INDENTURE"), among Armor Holdings, Inc., a Delaware corporation (the "COMPANY"), the subsidiary guarantors listed on Exhibit A attached hereto (collectively, the "Existing Subsidiary Guarantors"), the subsidiary guarantors listed on Exhibit B attached hereto (the "New Subsidiary Guarantors"), and U.S. Bank National Association (formerly Wachovia Bank, National Association), a national banking association, as trustee (the "TRUSTEE"). WITNESSETH WHEREAS, the Company has issued its 2.00% Senior Subordinated Convertible Notes due November 1, 2024 (the "NOTES") in the aggregate principal amount of $345,000,000 under and pursuant to the Indenture, dated as of October 29, 2004 (the "BASE INDENTURE"), between the Company and the Trustee, as supplemented by the First Supplemental Indenture, dated as of October 29, 2004 (the "FIRST SUPPLEMENTAL INDENTURE"), among the Company, the Subsidiary Guarantors parties thereto and the Trustee, as further supplemented by the Second Supplemental Indenture, dated as of December 29, 2004 (the "SECOND SUPPLEMENTAL INDENTURE"), among the Company, the Subsidiary Guarantors parties thereto, and the Trustee, as further supplemented by the Third Supplemental Indenture, dated as of May 25, 2005 (the "THIRD SUPPLEMENTAL INDENTURE") among the Company, the Subsidiary Guarantors parties thereto and the Trustee, as further supplemented by the Fourth Supplemental Indenture, dated as of August 25, 2005, (the "FOURTH SUPPLEMENTAL INDENTURE) among the Company, the Subsidiary Guarantors parties thereto and the Trustee, as further supplemented by the Fifth Supplemental Indenture, dated as of December 9, 2005, (the "FIFTH SUPPLEMENTAL INDENTURE") among the Company, the Subsidiary Guarantors parties thereto and the Trustee, together with the Base Indenture, the First Supplemental Indenture, the Second Supplemental Indenture, the Third Supplemental Indenture, the Fourth Supplemental Indenture, (the "INDENTURE"), among the Company, the Subsidiary Guarantors parties thereto and the Trustee; WHEREAS, pursuant to Section 5.03 of the First Supplemental Indenture, the Company is required to cause the New Subsidiary Guarantors to execute and deliver to the Trustee this Sixth Supplemental Indenture pursuant to which the New Subsidiary Guarantors shall become bound by the provisions of the Indenture as a Subsidiary Guarantor; WHEREAS, pursuant to Section 10.01 of the First Supplemental Indenture, the Trustee is authorized to execute and deliver this Sixth Supplemental Indenture; WHEREAS, all things necessary for the execution of this Sixth Supplemental Indenture and to make this Sixth Supplemental Indenture a valid and binding agreement of the parties hereto have been done. NOW, THEREFORE, for and in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged by the Company, the Existing Subsidiary Guarantors, the New Subsidiary Guarantors, and the Trustee, such parties  hereby agree for the benefit of each other and the equal and ratable benefit of the Holders of the Notes as follows: Section 1. Definitions. Unless otherwise stated or unless the context shall otherwise require, all capitalized terms used in this Sixth Supplemental Indenture shall be given the same meanings as such terms are defined in the Indenture. Section 2. Subsidiary Guarantee. (a) By execution and delivery of this Sixth Supplemental Indenture, the New Subsidiary Guarantors hereby agree to become a Subsidiary Guarantor pursuant to the Indenture and to assume all obligations of the Subsidiary Guarantors under the Indenture (including, without limitation, the Subsidiary Guarantee as defined in the Indenture) and the Notes, in each case, in accordance with the terms thereof. (b) The New Subsidiary Guarantors hereby agree that its execution and delivery of this Sixth Supplemental Indenture shall evidence its Subsidiary Guarantee as set forth in the Indenture without the need for any further notation on the Notes and the delivery and authentication of any Note by the Trustee under the Indenture, including any Note authenticated and delivered on or prior to the date of this Sixth Supplemental Indenture, and shall constitute due delivery of the Subsidiary Guarantee set forth in this Sixth Supplemental Indenture on behalf of the New Subsidiary Guarantors. Each of the Existing Subsidiary Guarantors hereby agrees that its Subsidiary Guarantee set forth in the Indenture shall remain in full force and effect. Section 3. Effectiveness and Validity. (a) This Sixth Supplemental Indenture shall become effective on the date first written above. The Indenture, as supplemented by this Sixth Supplemental Indenture, is in all respects ratified and confirmed hereby. Following the effectiveness hereof, the Indenture shall be deemed supplemented in accordance herewith, and this Sixth Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or hereafter authenticated and delivered under the Indenture as supplemented by the Sixth Supplemental Indenture shall be entitled to the benefit thereof and hereof and be bound thereby and hereby. (b) If an Officer of a Subsidiary Guarantor whose signature is on the Indenture or the Sixth Supplemental Indenture no longer holds that office at the time the Trustee authenticates such Notes or at any time thereafter, such Subsidiary Guarantor's Subsidiary Guarantee shall be valid nevertheless. Section 4. Solvency; No Fraudulent Transfer or Conveyance. The New Subsidiary Guarantors, for the benefit of each Holder, confirms that it is a solvent corporation, limited liability company, or other entity and that the granting of the Subsidiary Guarantee is not made with the purpose of defrauding any of its current creditors. Each of the Company and the New Subsidiary Guarantors confirm that the Subsidiary Guarantee given by the New Subsidiary Guarantor does not constitute a fraudulent transfer or conveyance 2  for purposes of the United States Bankruptcy Code, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer Act or any similar Federal or state law. Section 5. No Personal Liability of Directors, Officers, Employees and Stockholders. No director, officer, employee, incorporator or stockholder of the Company or any Subsidiary Guarantor, as such, shall have any liability for any obligations of the Company or the Subsidiary Guarantors under the Notes, the Indenture or this Sixth Supplemental Indenture, the Subsidiary Guarantees, or for any claim based on, in respect of, or by reason of, such obligations or their creation. The acceptance of a Note by each Holder of Notes is deemed to be a waiver and release of all such liability. This waiver and release are part of the consideration for issuance of the Subsidiary Guarantee set forth in and evidenced by this Sixth Supplemental Indenture. Section 6. Governing Law. THIS SIXTH SUPPLEMENTAL INDENTURE AND THE NOTES AND THE SUBSIDIARY GUARANTEE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO ITS CONFLICTS OF LAW PRINCIPLES. Section 7. Successors. All agreements of the Company and the Subsidiary Guarantors in the Indenture, this Sixth Supplemental Indenture and the Notes shall bind their respective successors. All agreements of the Trustee in this Sixth Supplemental Indenture shall bind its successors. Section 8. Duplicate Originals. The parties may sign any number of copies of this Sixth Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same instrument. Section 9. Severability. In case any provision in this Sixth Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions of the Indenture, this Sixth Supplemental Indenture and the Notes shall not in any way be affected or impaired thereby, and a Holder shall have no claim therefor against any party hereto. Section 10. Headings. The headings of the sections of this Sixth Supplemental Indenture have been inserted for convenience of reference only, are not to be considered a part of this Sixth Supplemental Indenture and will in no way modify or restrict any of the terms or provisions hereof. 3  Section 11. Trustee. The Trustee makes no representations as to the validity or sufficiency of this Sixth Supplemental Indenture. The recitals and statements herein are deemed to be those of the Company and the Subsidiary Guarantors and not of the Trustee. 4  SIGNATURES IN WITNESS WHEREOF, the parties hereto have caused this Sixth Supplemental Indenture to be duly executed as of the date first written above. ARMOR HOLDINGS, INC., a Delaware corporation By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Corporate Controller and Treasurer  U.S. BANK NATIONAL ASSOCIATION as Trustee By: /s/ Stephanie Moore --------------------------------------- Name: Stephanie Moore Title: Authorized Agent  AS EXISTING SUBSIDIARY GUARANTORS: 911EP, INC. ACCUCASE, L.L.C. AHI PROPERTIES I, LLC (F/K/A AHI PROPERTIES I, INC.) ARMOR ACCESSORIES, INC. ARMOR BRANDS, INC. ARMORGROUP SERVICES, LLC ARMOR HOLDINGS GP, LLC ARMOR HOLDINGS LP, LLC ARMOR HOLDINGS FORENSICS, L.L.C. ARMOR HOLDINGS PRODUCTS, L.L.C. ARMOR HOLDINGS PROPERTIES, INC. ARMOR HOLDINGS MOBILE SECURITY, L.L.C. ARMOR SAFETY PRODUCTS COMPANY BIANCHI INTERNATIONAL CASCO INTERNATIONAL, INC. CDR INTERNATIONAL, INC. CENTIGON USA, LLC THE CENTIGON COMPANY, LLC CENTIGON SALES & MARKETING, LLC DEFENSE TECHNOLOGY CORPORATION OF AMERICA HATCH IMPORTS, INC. IDENTICATOR, LLC MONADNOCK LIFETIME PRODUCTS, INC., a Delaware corporation MONADNOCK LIFETIME PRODUCTS, INC. a New Hampshire corporation MONADNOCK POLICE TRAINING COUNCIL, INC. NEW TECHNOLOGIES ARMOR, INC. ODV HOLDINGS CORP. O'GARA-HESS & EISENHARDT ARMORING COMPANY, L.L.C. PRO-TECH ARMORED PRODUCTS OF MASSACHUSETTS, INC. RAMTECH DEVELOPMENT CORP. SAFARILAND GOVERNMENT SALES, INC. SAFARI LAND LTD., INC. SPEEDFEED ACQUISITION CORP. MT. COBB SPECIALTY, INC.  PENN FIBRE & SPECIALTY COMPANY OF DELAWARE, INC. PFS SALES COMPANY SECOND CHANCE ARMOR, INC. THE SPECIALTY GROUP, INC. SPECIALTY DEFENSE SYSTEMS OF DELAWARE, INC. SPECIALTY DEFENSE SYSTEMS OF KENTUCKY, INC. SPECIALTY DEFENSE SYSTEMS OF NEVADA, INC. SPECIALTY DEFENSE SYSTEMS OF PENNSYLVANIA, INC. SPECIALTY DEFENSE SYSTEMS OF TENNESSEE, INC. SPECIALTY MACHINERY, INC. SPECIALTY PLASTIC PRODUCTS OF DELAWARE, INC. By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Vice President  NAP PROPERTIES, LTD. By: NAP PROPERTY MANAGERS LLC, its General Partner By: ARMOR HOLDINGS PROPERTIES, INC., its Managing Member By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Vice President NAP PROPERTY MANAGERS, LLC By: ARMOR HOLDINGS PROPERTIES, INC., its Managing Member By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Vice President  ARMOR HOLDINGS PAYROLL SERVICES, LLC By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Manager ARMOR HOLDINGS AEROSPACE & DEFENSE, INC. (F/K/A AHI BULLETPROOF ACQUISITION CORP.) INTERNATIONAL CENTER FOR SAFETY EDUCATION, INC. SIMULA, INC. SIMULA AEROSPACE & DEFENSE GROUP, INC. SIMULA POLYMER SYSTEMS, INC. SIMULA TECHNOLOGIES, INC. By: /s/ Glenn J. Heiar --------------------------------------- Name: Glenn J. Heiar Title: Chief Financial Officer, Treasurer and Secretary ARMOR HOLDINGS AIRCRAFT, LLC By: /s/ Glenn J. Heiar --------------------------------------- Name: Glenn J. Heiar Title: Manager and Vice President ARMOR HOLDINGS GOVERNMENT RELATIONS, LLC By: /s/ Glenn J. Heiar --------------------------------------- Name: Glenn J. Heiar Title: Manager, Chief Financial Officer, Treasurer and Secretary  ARMOR HOLDINGS INFORMATION TECHNOLOGY, L.L.C. By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Manager and Vice President  AS NEW SUBSIDIARY GUARANTORS: STEWART & STEVENSON SERVICES, INC. C. JIM STEWART & STEVENSON, INC. CREOLE STEWART & STEVENSON, INC. (F/K/A CREOLE ACQUISITION INCORPORATED) CYPRESS ACQUISITION, INC. (F/K/A SKYMAIL-WEST, CORP.) IPSC CO., INC. NEW CYPRESS, INC. PAMCO SERVICES INTERNATIONAL, INC. (F/K/A STEWART & STEVENSON INTERAMERICAS, INC.) S&S DOMESTIC INTERNATIONAL SALES CORP. (F/K/A STEWART & STEVENSON INTERNATIONAL CORPORATION) S&S TUG SERVICE CENTERS INC. (F/K/A S&S OPERATORS, INC.). SIERRA DETROIT DIESEL ALLISON, INC. STEWART & STEVENSON DE LAS AMERICAS, INC. STEWART & STEVENSON DEVELOPMENT SERVICES, INC. (F/K/A SOUTH BELLAIRE CORPORATION) STEWART & STEVENSON EMPLOYEE SERVICES, INC. STEWART & STEVENSON FMTV INTERNATIONAL, INC. STEWART & STEVENSON HOLDINGS, INC. (F/K/A S&S OILTOOLS, INC.) STEWART & STEVENSON INTERNATIONAL, INC. STEWART & STEVENSON OPERATIONS, INC. (F/K/A STEWART & STEVENSON OPERATORS, INC.). STEWART & STEVENSON OVERSEAS, INC. STEWART & STEVENSON POWER, INC. STEWART & STEVENSON TECHNICAL SERVICES, INC. (F/K/A OPERACIONES E INGENIERIA ADINA CO., S.A.) STEWART & STEVENSON TRANSPORTATION, INC. STEWART & STEVENSON TVS, INC. (F/K/A STEWART & STEVENSON VEHICLE SERVICES, INC.)  STEWART & STEVENSON VEHICLE SERVICES, INC. (F/K/A FUTURE ACQUISITION, INC.) (F/K/A STEWART & STEVENSON VEHICLE SERVICES (NC), INC.) TVS HOLDINGS, INC. By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Vice President EXTENDED REACH LOGISTIC, INC. By: STEWART & STEVENSON VEHICLE SERVICES, Inc., its Parent By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Vice President S&S TRUST, A PENNSYLVANIA BUSINESS TRUST By: /s/ Robert R. Schiller --------------------------------------- Name: Robert R. Schiller Title: Trustee  STEWART & STEVENSON TACTICAL VEHICLE SYSTEMS, LP By: STEWART & STEVENSON TVS, INC., its General Partner By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Vice President TVS HOLDINGS, LLC, its Limited Partner By: /s/ Philip A. Baratelli --------------------------------------- Name: Philip A. Baratelli Title: Vice President  EXHIBIT A 911EP, Inc., a Delaware corporation AccuCase, L.L.C., a California limited liability company AHI Properties I, LLC (f/k/a AHI Properties I, Inc.) a Delaware limited liability company Armor Accessories, Inc., a Delaware corporation Armor Brands, Inc., a Delaware corporation ArmorGroup Services, LLC, a Delaware limited liability company Armor Holdings Aerospace & Defense, Inc. (f/k/a AHI Bulletproof Acquisition Corp.), a Delaware corporation Armor Holdings Forensics, L.L.C., a Delaware limited liability company Armor Holdings Government Relations, LLC, a Delaware limited liability company Armor Holdings GP, LLC, a Delaware limited liability company Armor Holdings Information Technology, L.L.C., a Delaware limited liability company Armor Holdings LP, LLC, a Delaware limited liability company Armor Holdings Mobile Security, L.L.C., a Delaware limited liability company Armor Holdings Payroll Services, LLC, a Delaware limited liability company Armor Holdings Products, L.L.C., a Delaware limited liability company Armor Holdings Properties, Inc., a Delaware corporation Armor Safety Products Company, a Delaware corporation Bianchi International, a California corporation Casco International, Inc., a New Hampshire corporation CDR International, Inc., a Delaware corporation Centigon USA, LLC, a Delaware limited liability company Centigon Sales & Marketing, LLC, a Delaware limited liability company The Centigon Company, LLC, a Delaware limited liability company Defense Technology Corporation of America, a Delaware corporation Hatch Imports, Inc., a California corporation Identicator, Inc., a Delaware corporation International Center for Safety Education, Inc., an Arizona corporation Monadnock Lifetime Products, Inc., a Delaware corporation Monadnock Lifetime Products, Inc., a New Hampshire corporation Monadnock Police Training Council, Inc., a New Hampshire corporation Mt. Cobb Specialty, Inc., a Pennsylvania corporation NAP Properties, Ltd., a California limited partnership NAP Property Managers, LLC, a California limited liability company New Technologies Armor, Inc., a Delaware corporation ODV Holdings Corp., a Delaware corporation O'Gara-Hess & Eisenhardt Armoring Company, L.L.C., a Delaware limited liability company Pro-Tech Armored Products of Massachusetts, Inc., a Massachusetts corporation Ramtech Development Corp., a Delaware corporation Safariland Government Sales, Inc., a California corporation Safari Land Ltd., Inc., a California corporation Second Chance Armor, Inc., a Delaware corporation Simula, Inc., an Arizona corporation Simula Aerospace & Defense Group, Inc., an Arizona corporation Simula Polymer Systems, Inc., an Arizona corporation  Simula Technologies, Inc., an Arizona corporation Armor Holdings Aircraft, LLC, a Delaware limited liability company The Specialty Group, Inc., a Pennsylvania corporation Specialty Defense Systems of Delaware, Inc., a Delaware corporation Specialty Plastic Products of Delaware, Inc., a Delaware corporation Specialty Defense Systems of Tennessee, Inc., a Tennessee corporation Specialty Defense Systems of Pennsylvania, Inc., a Pennsylvania corporation Specialty Defense Systems of Kentucky, Inc., a Kentucky corporation Specialty Defense Systems of Nevada, Inc., a Nevada corporation Specialty Machinery, Inc., a Pennsylvania corporation Penn Fibre & Specialty Company of Delaware, Inc., a Delaware corporation PFS Sales Company, a Pennsylvania corporation  EXHIBIT B Stewart & Stevenson Services, Inc., a Texas corporation. C. Jim Stewart & Stevenson, Inc., a Delaware corporation Creole Stewart & Stevenson, Inc. (f/k/a Creole Acquisition Incorporated), a Delaware corporation. Cypress Acquisition, Inc. (f/k/a Skymail-West, Corp.), a Delaware corporation. Extended Reach Logistic, Inc., a Virginia corporation. IPSC CO., INC., an Arkansas corporation. New Cypress, Inc., a Delaware corporation. PAMCO Services International, Inc. (f/k/a Stewart & Stevenson InterAmericas, Inc.), a Delaware corporation. S&S Domestic International Sales Corp. (f/k/a Stewart & Stevenson International Corporation), a Delaware corporation. S&S Trust, a Pennsylvania Business Trust. S&S Tug Service Centers Inc. (f/k/a S&S Operators, Inc.), a Delaware corporation. Sierra Detroit Diesel Allison, Inc., a Nevada corporation. Stewart & Stevenson de las Americas, Inc., a Delaware corporation. Stewart & Stevenson Development Services, Inc. (f/k/a South Bellaire Corporation), a Delaware corporation. Stewart & Stevenson Employee Services, Inc., a Delaware corporation. Stewart & Stevenson FMTV International, Inc., a Delaware corporation. Stewart & Stevenson Holdings, Inc. (f/k/a S&S Oiltools, Inc.), a Delaware corporation. Stewart & Stevenson International, Inc., a Delaware corporation. Stewart & Stevenson Operations, Inc. (f/k/a Stewart & Stevenson Operators, Inc.). a Delaware corporation. Stewart & Stevenson Overseas, Inc., a Texas corporation. Stewart & Stevenson Power, Inc., a Delaware corporation. Stewart & Stevenson Tactical Vehicle Systems, LP, a Delaware limited partnership. Stewart & Stevenson Technical Services, Inc. (f/k/a Operaciones E Ingenieria Adina Co., S.A.), a Delaware corporation. Stewart & Stevenson Transportation, Inc., a Texas corporation. Stewart & Stevenson TVS, Inc. (f/k/a Stewart & Stevenson Vehicle Services, Inc.). a Delaware corporation. Stewart & Stevenson Vehicle Services, Inc. (f/k/a Future Acquisition, Inc.) (f/k/a Stewart & Stevenson Vehicle Services (NC), Inc.), a Delaware corporation. TVS Holdings, Inc., a Delaware corporation. TVS Holdings, LLC, a Delaware limited liability company.