In a March 13, 2011 photo provided by Navy Visual News Service,Lt. Cmdr. Albin Quinko, from San Diego, left, embarked aboard the aircraft carrier USS Ronald Reagan, hands over supplies to a Japanese aid worker during earthquake and tsunami relief efforts near Sendai, Japan. Ronald Reagan is off the coast of Japan rendering humanitarian assistance and disaster relief following the 8.9 magnitude earthquake and tsunami. (AP Photo/Navy Visual News Service, Mass Communication Specialist 3rd Class Dylan McCord)
WASHINGTON - The Navy says it moved several U.S. ships away from a troubled Japanese nuclear plant after detecting low-level radiation on 17 helicopter crew members positioned there for relief efforts.