Ukrainian President Viktor Yanukovych's motorcade departs the flight line on Joint Base Andrews, Md., April 11, 2010, on its way to the Nuclear Security Summit hosted by President Barack Obama in Washington, D.C., this Monday and Tuesday. The 316th Wing is leading operations to provide safe, effective, and efficient arrival and departure services for the invited guests transiting Andrews. (U.S. Air Force photo by Airman 1st Class Perry Aston)