A crew chief from the 1st Maintenance Squadron 27th Aircraft Maintenance Unit performs a final checks on an F-22 Raptor during ATLANTIC TRIDENT 17 at Joint Base Langley-Eustis, Va., April 18, 2017. Approximately 225 U.S. Air Force, 175 Royal air force and 150 French air force service members participated in the exercise. (U.S. Air Force photo/Senior Airman Kimberly Nagle)