inactive duty training
(3) The term “inactive duty training” means— (A) duty (other than full-time duty) prescribed or authorized for Reserves (including commissioned officers of the Reserve Corps 1 of the Public Health Service), or for members of the Space Force in a space force active status (as defined in section 101(e)(1) of title 10 ), which duty is scheduled in advance by competent authority to begin at a specific time and place; and (B) in the case of a member of the National Guard or Air National Guard of any State, such term means duty (other than full-time duty) which is scheduled in advance by competent authority to begin at a specific time and place under sections 316 , 502 , 503 , 504 , or 505 of title 32 , United States Code .