Air Force Staff Sgt. Lukas Jochem, left, and Tech. Sgt. David Anderson, both electrical environmental technicians assigned to the 349th Aircraft Maintenance Squadron, repair a cooling air exit valve on a C-5M Super Galaxy at Travis Air Force Base, California, Feb 23, 2021. Electrical environmental specialists are tasked with troubleshooting and repairing systems that control door depressurization, fire extinguishing and suppression, fuel control, liquid cooling, air conditioning and cabin pressure for the cockpit and main passenger areas.

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Photo credit: © Operation 2021 / Alamy / Afripics
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