official travel
(1) The term “official travel” means the following: (A) Military duty or official business performed by an authorized traveler away from a duty assignment location or other authorized location. (B) Travel performed by an authorized traveler ordered to relocate from a permanent duty station to another permanent duty station. (C) Travel performed by an authorized traveler ordered to the first permanent duty station, or separated or retired from uniformed service. (D) Local travel in or around the temporary duty or permanent duty station. (E) Other travel as authorized or ordered by the administering Secretary.