Senior Airman Lyle M. Costas, a space operator from the 233d Space Group, Greeley, Colorado, prepares to bring a dummy through an obstacle during a field training exercise. The 233d Space Group is enhancing their ability to survive and operate in austere field conditions during their annual field training exercise at Fort Carson Army Installation, Colorado Springs. They are the USAF’s only mobile unit providing survivable and endurable missile warning and nuclear detection to the National Command Authority. (

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Photo credit: © Dudley Little / Alamy / Afripics
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Keywords: 140wg, air, america, archive, armed, army, cong1860, defence, force, forces, military, navy, reportage, service, serviceman, servicemen, soldier, stateofco, states, united, usa