<page> Exhibit 10(a) SECOND AMENDMENT TO KAMAN CORPORATION AMENDED AND RESTATED DEFERRED COMPENSATION PLAN THIS AMENDMENT made by Kaman Corporation for the purpose of amending its Amended and Restated Deferred Compensation Plan, WITNESSETH: WHEREAS, by Written Plan Instrument dated November 12, 2002, Kaman Corporation (hereinafter referred to as the "Corporation") adopted an Amended and Restated Deferred Compensation Plan; and WHEREAS, the Corporation reserved the right, in Section 8.2 thereof, to amend the Plan; and WHEREAS, the Plan was previously amended by a First Amendment thereto; and WHEREAS, the Corporation now wishes to amend the Plan in the particulars set forth below; NOW, THEREFORE, the Corporation hereby amends the Plan as follows: 1. Sections 11.1(a) and 11.1(b) are amended by the deletion of the term "Kaman Corporation Deferred Compensation Plan Trust Agreement" wherever the same shall appear therein and the substitution of the term "Kaman Corporation Deferred Compensation Plan Trust Agreement Number 2" in lieu thereof. 2. Except as hereinabove modified and amended, the Amended and Restated Deferred Compensation Plan, as amended, shall remain in full force and effect. IN WITNESS WHEREOF, the Corporation has caused this Second Amendment to be executed on this 29th day of June, 2004. WITNESS KAMAN CORPORATION /s/ C. A. Clark By: /s/ Robert M. Garneau - ------------------------ --------------------------- Robert M. Garneau Executive Vice President and Chief Financial Officer <page>