For the purpose of this subchapter—
(1)
“Government” means the Government of the United States;
(2)
“agency” means an Executive agency and the Library of Congress, but does not include a Government controlled corporation;
(3)
“employee” means an employee in or under an agency and more specifically defined by regulations prescribed by the President;
(4)
“United States”, when used in a geographical sense, means the several States and the District of Columbia;
(5)
“continental United States” means the several States and the District of Columbia, but does not include Alaska or Hawaii; and
(6)
“foreign area” means—
(A)
the Trust Territory of the Pacific Islands; and
(B)
any other area outside the United States, the Commonwealth of Puerto Rico, the Canal Zone, and territories and possessions of the United States.