Displaced Egyptian citizens who have fled to Tunisia from violence and instability in Libya are transported aboard a U.S. Air Force C-130J Hercules from Djerba, Tunisia, to Cairo, Egypt, March 5, 2011. This response to the developing humanitarian crisis is part of a broader U.S. government effort to relieve suffering caused by the crisis the in Libya. (U.S. Army photo/Staff Sgt. Brendan Stephens)