Security forces specialists assigned to the 182nd Security Forces Squadron, Illinois Air National Guard, practice putting on their gas masks in formation during civil disturbance training in Peoria, Ill., March 4, 2017. The squadron trains in confrontation management as part of the Air National Guard’s mission to be the first choice for homeland operations.

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Photo credit: © Chuck Little / Alamy / Afripics
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Keywords: air, america, archive, armed, army, choice, defence, domops, force, forces, military, navy, police, reportage, riot, security, service, serviceman, servicemen, soldier, states, training, united, usa