Senior Airman Angel Graves, a crew chief assigned to the 457th Expeditionary Fighter Squadron, 301st Fighter Wing, Joint Reserve Base Fort Worth, Texas, performs system checks on an F-16C Fighting Falcon at the 71st Air Base, Campia Turzii, Romania, June 27, 2019. Airmen and aircraft assigned to the 457th EFS are in Romania for a Theater Security Package in support of Operation Atlantic Resolve. While in theater, these personnel and aircraft will participate in multiple readiness exercises alongside NATO allies and partners to strengthen interoperability and to demonstrate U.S. commitment to the security and stability of Europe. (U.S. Air Force photo by Master Sgt. Megan Crusher)