A U.S. Air Force B-1B Lancer, 9th Expeditionary Bomb Squadron, Air Force Central Command, takes off from Al Udeid Air Base, Qatar, during Joint Air Defense Exercise 19-01, Feb. 19, 2019. The aircraft participated with regional partners to test objective-based command and control actions during the exercise. (U.S. Air Force photo by Senior Airman Gracie I. Lee)