Maj. Sean Herlihy, a special projects officer with Marine Corps Individual Reserve Support Activity (MCIRSA), Force Headquarters Group, Marine Forces Reserve, speaks with Marines in the Individual Ready Reserve (IRR) during a reserve opportunity and obligations brief as a part of an IRR Muster, Manhattan Beach, California, Jan. 21, 2023. During these muster events, MCIRSA conducts an administrative screening of IRR Marines to ensure those Marines’ readiness to augment and reinforce the active component.

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Keywords: fhg, irr, marine, mcirsa, muster, smcr