49 USC 44305 - Insuring United States Government property

(a) General.— 
With the approval of the President, a department, agency, or instrumentality of the United States Government may obtain
(1) insurance under this chapter, including insurance for risks from operating an aircraft in intrastate or interstate air commerce, but not including insurance on valuables subject to sections 17302 and 17303 of title 40; and
(2) insurance for risks arising from providing goods or services directly related to and necessary for operating an aircraft covered by insurance obtained under clause (1) of this subsection if the aircraft is operated
(A) in carrying out a contract of the department, agency, or instrumentality; or

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(B) to transport military forces or materiel on behalf of the United States under an agreement between the Government and the government of a foreign country.
(b) Premium Waivers and Indemnification.— 
With the approval required under subsection (a) of this section, the Secretary of Transportation may provide the insurance without premium at the request of the Secretary of Defense or the head of a department, agency, or instrumentality designated by the President when the Secretary of Defense or the designated head agrees to indemnify the Secretary of Transportation against all losses covered by the insurance. The Secretary of Defense and any designated head may make indemnity agreements with the Secretary of Transportation under this section. If such an agreement is countersigned by the President or the Presidents designee, the agreement shall constitute, for purposes of section 44302 (c), a determination that continuation of the aircraft operations to which the agreement applies is necessary to carry out the foreign policy of the United States.