Tech Sgt. Marshall Hess, 635th Materiel Maintenance Squadron contingency training supervisor, makes adjustments to a collective protective shelter, April 14, 2021, on Holloman Air Force Base, New Mexico. Once fully capable and qualified, these shelters are assigned a Unit Type Code so they can be officially deployed throughout the Air Force.

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Photo credit: © Operation 2021 / Alamy / Afripics
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Keywords: .., air, center, civil, command, cycle, education, engineer, force, life, management, pacific, training