Air Force Tech. Sgt. Brian Daniels, a guidance and control lead technician with the 15th Maintenance Group, marks and dates chemical paper while conducting a perimeter check during an operational readiness exercise at Joint Base Pearl Harbor-Hickam, Hawaii, March 9, 2013. The exercise was designed to test and evaluate the installation's ability to perform and respond during disaster and crisis situations. Tech. Sgt. Jerome S. Tayborn

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Photo credit: © PJF Military Collection / Alamy / Afripics
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Keywords: air, airforce, force, military, states, training, united, usa, usaf