5 USC 5706a - Subsistence and travel expenses for threatened law enforcement personnel

(a) Under regulations prescribed pursuant to section 5707 of this title, when the life of an employee who serves in a law enforcement, investigative, or similar capacity, or members of such employees immediate family, is threatened as a result of the employees assigned duties, the head of the agency concerned may approve appropriate subsistence payments for the employee or members of the employees family (or both) while occupying temporary living accommodations at or away from the employees designated post of duty.
(b) When a situation described in subsection (a) of this section requires the employee or members of the employees family (or both) to be temporarily relocated away from the employees designated post of duty, the head of the agency concerned may approve transportation expenses to and from such alternate location.