Target Practice Army Capt. Joshua Donaldson, the chemical, biological, radiological, nuclear and explosives officer for the 311th Signal Command, aims at simulated targets during primary marksmanship instruction at Schofield Barracks on Oahu, Hawaii, Jan. 24, 2021. SHARE: Download: Full Size (0.71 MB) Credit: Marc Ayalin, Army VIRIN: 210124-A-QL164-001.JPG Photo Gallery