National Guard members from the 42nd, 47th and 102nd Civil Support Teams (CST) conduct a security sweep during the Boston Marathon on April 17, 2017, in Boston Mass. The Guard members were working together with federal, state and local first responders to keep the 26-mile route from Hopkinton to Boston safe for marathon runners and spectators. (Photo by Capt. Leslie Reed, Oregon Military Department Public Affairs)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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Keywords: 1st, 2017, airmen, april, biological, boston, cbrne, chemical, civil, cst, explosive, hopkinton, marathon, massachusetts, nuclear, radiological, soldiers, support, team