An M4 Carbine sits in a case before being used in a simulated Force-on Force training during Exercise Mobility Guardian 2021 at Alpena Combat Training Center, Alpena, Michigan, May 24, 2021. Mobility Guardian tests Mobility Airmen through a challenging, realistic and detailed scenario based on relevant real-world security challenges.

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Photo credit: © Operation 2021 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 621st, ace, contingency, location, mg21, response, team, wing