The Navy said washing with soap and water removed the radioactivity . In addition , the Navy said the U.S. 7th Fleet has temporarily repositioned its ships and planes away from the Fukushima Daiichi nuclear power plant after detecting low-level contamination in the air and on its planes in the area , the Navy said . The U.S. 7th Fleet deployed ships and aircraft away from the Fukushima Daiichi plant . The Navy said ` ` airborne radioactivity '' was detected 100 miles away from the plant . The most exposure anyone onboard received is less than a month 's normal radiation dose .
The Navy said washing with soap and water removed the radioactivity . The U.S. 7th Fleet deployed ships and aircraft away from the Fukushima Daiichi plant . The Navy said ` ` airborne radioactivity '' was detected 100 miles away from the plant . The most exposure anyone onboard received is less than a month 's normal radiation dose .