Monitoring ocean currents
Staff Sgt. Blake Landry (left) and Lt. Col. Dave Kincaid wait for the signal to deploy a buoy from a C-130 Hercules April 29, 2011, off the eastern coast of Japan. Sergeant Landry is a loadmaster assigned to the 36th Airlift Squadron at Yokota Air Base, Japan. Colonel Kincaid is the deputy commander of the 374th Operations Group at Yokota Air Base, Japan. (U.S. Air Force photo/Staff Sgt. Samuel Morse)