Lawrence Clark, a chemist at the U.S. Army Center for Health Promotion and Preventive Medicine at Aberdeen Proving Ground, Md., connects a summa canister to a Tekmar autocan system. The canisters are used to collect air samples in deployment locations. The autocan system then introduces the samples into a state-of-the-art analytical system. Photo by Staff Sgt. Kathleen T. Rhem, USA. Lawrence Clark, a chemist at the U.S. Army Center for Health Promotion and Preventive Medicine at Aberdeen Proving Ground, Md., connects a summa canister to a Tekmar autocan system. The canisters are used to collect air samples in deployment locations. The autocan system then introduces the samples into a state-of-the-art analytical system. Photo by Staff Sgt. Kathleen T. Rhem, USA. SHARE: Download: Full Size (0.13 MB) Credit: VIRIN: 998367-O-VAQ02-930.jpg Photo Gallery