U.S. Air Force C-130 Hercules drops equipment belonging to the U.S. Army's 82nd Airborne Division onto Luzon drop zone during a training mission during Joint Operations Access Exercise 12-02 at Mackall Army Airfield, N.C., June 4, 2012. JOAX is a two-week forcible entry and ground combat exercise to prepare Air Force and Army service members to respond to worldwide crises and contingencies.