Staff Sgt. Andrew Beckford, a survey team member with the 1st Civil Support Team, Massachusetts National Guard sweeps a site for chemical, biological, radiological, nuclear, and explosive (CBRNE) materials, April 16, 2017, in preparation for the 121st Annual Boston Marathon near Hopkinton, Mass. Soldiers and Airmen from more than 21-states assisted with the mission keeping the course safe for both runners and spectators.

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