F-15C Eagles from the 493rd Fighter Squadron prepare to depart Royal Air Force Lakenheath, England, Aug. 29, 2017. The 48th Fighter Wing has deployed approximately 140 Airmen and seven F-15C Eagles to Siauliai Air Base, Lithuania to assume control of the NATO Baltic Air Policing peacetime collective defense mission.(U.S. Air Force photo/Master Sgt. Eric Burks)