3/18/2011 - Senior Airman Eva Gaus (left) and Senior Airman Jonathan Jones (right) indicate "all clear" to a pilot after checking for beta and gamma radiation March 17, 2011, at Yokota Air Base, Japan. The C-17 Globemaster III transported Japan Ground Self Defense Force troops and vehicles here from Okinawa, to support the relief effort after the earthquake and tsunami, March 11. Airmen Gaus and Jones are assigned to the 374th Civil Engineer Squadron. (U.S. Air Force photo/Osakabe Yasuo)

3/18/2011 - Japan Ground Self-Defense Force members disembark from the C-17 Globemaster III that transported them to Yokota Air Base, Japan, from Okinawa, March 17, 2011. JGSDF will team up with US forces to support earthquake and tsunami relief efforts. (U.S. Air Force photo/Airman 1st Class Krystal M. Garrett)

3/18/2011 - Japan Ground Self-Defense Force members arrive at Yokota Air Base, Japan from Okinawa, March 17, 2011. JGSDF service members will team with U.S. forces to provide support for earthquake and tsunami relief efforts. (U.S. Air Force photo/Airman 1st Class Krystal M. Garrett)

3/18/2011 - Japanese 1st Lt. Akira Takahashi marshals vehicles from the 15th Brigade, Japan Ground Self-Defense Force, March 17, 2011, at Yokota Air Base, Japan. The C-17 Globemaster III transported JGSDF troops and vehicles from Okinawa to support the relief effort after the earthquake and tsunami, March 11. Lieutenant Takahasi is assigned to the central transportation management command. (U.S. Air Force photo/Osakabe Yasuo)