Airmen 1st Class Dakota Parker of Brownsboro, Texas, assigned to Misawa Air Base, Bioenvironmental Engineering Department, uses a probe to detect radiation levels on the filter of a RADÄ“CO, a radiation detection instrument at Misawa Air Base. The department's field team is conducting frequent tests of atmospheric radiation levels and water contamination to ensure the safety of service and family members as efforts continue on base in support of Operation Tomodachi.