Contamination Check Army Sgt. 1st Class Leonardo Betancour checks Air Force Senior Airman Alex J. Potts for simulated contamination during training with the Emergency Response Training Institute at Naval Weapons Station Earle, N.J., Nov. 17, 2021. SHARE: Download: Full Size (6.01 MB) Tags: Air Force, Army, national guard Credit: Mark Olsen, National Guard VIRIN: 211117-Z-AL508-1196C.JPG Photo Gallery