A U.S. Air Force F-15C Eagle aircraft assigned to the 48th Air Expeditionary Group taxis at Siauliai Air Base, Lithuania, March 11, 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 2nd Lt. Keenan Kunst/Released)