A U.S. Air Force F-15C Eagle aircraft takes off for a training mission at Siauliai Air Base, Lithuania, March 10, 2014. The 48th Fighter Wing at Royal Air Force Lakenheath, England, sent six aircraft and more than 50 personnel to augment the four aircraft and approximately 150 airmen supporting the NATO Baltic Air Policing mission. The U.S. Air Force assumed command of the NATO Baltic Air Policing mission for a four-month rotation from January to May of 2014. (U.S. Air Force photo by Airman 1st Class Dana J. Butler/Released)