Green Screen Army Capt. Collenn O’Conner follows contamination procedures during a simulated chemical attack as part of an Expert Field Medical Badge test in Baumholder, Germany, Dec. 16, 2019. SHARE: Download: Full Size (1.66 MB) Tags: Army, Training Credit: Ismael Ortega, Army VIRIN: 191216-A-RD023-0099Y.JPG Photo Gallery