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  • Cryo techs go below zero

    U.S. Air Force Senior Airman Steven C. Rehana, 380th Expeditionary Logistics Readiness Squadron cryogenics technician, purges a liquid oxygen cart at Al Dhafra Air Base, United Arab Emirates, April 15, 2021. The cryogenics flight is responsible for providing more than 4,000 gallons of liquid oxygen