Army Spc. Michael Richards, combat engineer, 572nd Brigade Engineer Battalion, 86th Infantry Brigade Combat Team (Mountain), Vermont National Guard, prepares C4 explosives for live demolition training at Camp Ethan Allen Training Site, Jericho, Vt., Feb. 11, 2017. After the C4 was prepared, the unit split into different groups to learn how to properly and safely detonate the material. ( Army National Guard photo by Staff Sgt. Ashley J. Hayes)

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