Marines with Marine Air Support Squadron 6, 4th Marine Aircraft Wing, Marine Forces Reserve, conduct swim qualifications during their annual training period on Marine Corps Air Station Miramar, San Diego, California, June 8, 2021. Once a year, the Marine Corps reserve units complete their two-week annual drill training in order to maintain occupational proficiency, meet the annual training requirements, and be ready to deploy in support of global operations of the Marine Corps.

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Photo credit: © Operation 2021 / Alamy / Afripics
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Keywords: annual, mass-6, mcas, miramar, qual, swim, training