French air force Patrouille de France aircraft perform during the ATLANTIC TRIDENT 17 World War I Remembrance Day at Joint Base Langley-Eustis, Va., April 21, 2017. The group performed at the end of the second week of the exercise, which is intended to share and develop training, tactics and procedures. (U.S. Air Force photo/Senior Airman Kimberly Nagle)