Air National Guard fire support specialists use a jackhammer to breach a concrete wall as part of a debris removal scenario Sunday, July 15, 2018 during the PATRIOT North 18 Exercise, at Volk Field Air National Guard Base, Wis. PATRIOT North 18 is an annual joint training exercise that tests the interoperability of military and civilian agencies. (Air National Guard

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Photo credit: © Barney Low / Alamy / Afripics
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Model Released: No

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