Army Col. Jayson Gilberti, 20th Engineer Brigade Commander, participates in an interview at Fort Polk, La., March 20, 2015. Gilberti was explaining the Field Training Exercise that the Brigade was conducting. ( Army photo by Cpl. George Huley/Released) 20th Engineer Brigade Field Training Exercise 150320-A-WF450-048

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Photo credit: © PJF Military Collection / Alamy / Afripics
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Keywords: 20th, armed, biological, brigade, chemical, conflict, engineer, exercise, field, forces, fort, louisiana, military, nuclear, polk, radiological, states, training, united, war