3/24/2011 - Members of the Air Force Radiation Assessment Team test water samples for possible radiation exposure here March 25. The AFRAT currently supports Operation Tomodachi by ensuring the local water supply is safe for use. (U.S. Air Force photo/Airman 1st Class Andrea Salazar)

3/24/2011 - Master Sgt. Ty Richards, Air Force Radiation Assessment Team member, tests local water samples for radiation here March 25. The AFRAT currently supports Operation Tomodachi by ensuring drinking water is safe for use. (U.S. Air Force photo/Airman 1st Class Andrea Salazar)

3/24/2011 - Containers filled with water from numerous local areas await to be examined inside the Air Force Radiation Assessment Team laboratory here March 25. The AFRAT consistently monitored elements from the surrounding areas of Yokota and Camp Zama for possible presence of radiation. (U.S. Air Force photo/Airman 1st Class Andrea Salazar)

3/24/2011 - Members of the Air Force Radiation Assessment Team, stationed out of Wright-Patterson Air Force Base, sample tap water from Yokota Air Base's water supply to make sure water at Yokota remains safe to drink March 25. So far there have been no positive findings of any kind in the water. (U.S. Air Force photo/Staff Sgt. Chad C. Strohmeyer)

3/24/2011 - Staff Sgt. Terry Shoup, Master Sgt. Ty Richards and Tech Sgt. Dwight Brown, Air Force Radiation Assessment Team, stationed out of Wright-Patterson Air Force Base, sample tap water from Yokota Air Base's water supply to make sure water at Yokota remains safe to drink March 25. So far there have been no positive findings of any kind in the water. (U.S. Air Force photo/Staff Sgt. Chad C. Strohmeyer)