A German air force crew chief, right, shadows U.S. Air Force Airman 1st Class Noah Luis Rivera, left, 31st Aircraft Maintenance Squadron crew chief, as he marshals a F-16C Fighting Falcon assigned to the 510th Fighter Squadron, Aviano Air Base, Italy, during Blue Flag 17 at Uvda Air Force Base, Israel, Nov. 7. Participation in exercises like Blue Flag further strengthen the relationship between the U.S. Air Force and partner nations and promote regional peace and stability. (U.S. Air Force photo/Senior Airman Abby L. Finkel)