At your official station.
At your official station.
(1) From your residence or other authorized point of departure, e.g., rail to airport;
(2) To your residence or other authorized point of return, e.g., airport to rail;
(3) From your residence to your office on the day you depart the official station on official TDY that requires at least one night's lodging; or
(4) From your office to your residence on the day you return to the official station from an official TDY assignment that required at least one night's lodging.