A Bangladesh Air Force (BAF) commando, left, exchanges a fist bump with a U.S. Air Force jumpmaster aboard a U.S. Air Force C-130 Hercules aircraft before a bilateral para-drop mission over Bangladesh during exercise Cope South 14 Nov. 10, 2013. Cope South is an annual bilateral aerial exercise designed to increase the combat readiness and interoperability of the U.S. Air Force and the BAF.