Marines with 2nd Landing Support Battalion, Combat Logistics Regiment 2, 2nd Marine Logistics Group, utilize a supplemental emergency breathing device during underwater egress training at Camp Lejeune, North Carolina, 16 Aug. 2021. Underwater egress training prepares Marines to safely and efficiently escape a submerged conveyance in the event of an accident.

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Photo credit: © Operation 2021 / Alamy / Afripics
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