41 C.F.R. § 303-70.700
Transportation for the immediate family of a law enforcement employee killed in line of duty
Agencies must provide transportation for the employee's immediate family, baggage, and household goods to an alternate residential destination if the head of the agency (or a designee) determines that the employee died as a result of personal injury sustained while in the performance of the employee's duties, and the employee was—
(a) A law enforcement officer as defined in 5 U.S.C. 5541;
(b) An employee in or under the Federal Bureau of Investigation who is not described in paragraph (a) of this section; or
(c) A Customs and Border Protection officer as defined in 5 U.S.C. 8331(31).