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Video by Cpl. Nikolas Mascroft
Steel Knight 25: MWSS-373 embarks LCACs
3rd Marine Aircraft Wing
Dec. 3, 2025 | 1:54
U.S. Marines with Marine Wing Support Squadron 373, Marine Air Control Group 38, 3rd Marine Aircraft Wing, load a convoy onto landing craft, air cushion at Marine Corps Base Camp Pendleton, California, during Steel Knight 25, Dec. 3, 2025. The movement from MCB Camp Pendleton to San Clemente Island showcases the importance of maritime mobility in sustaining aviation readiness across a distributed battlespace. Steel Knight is an annual exercise that strengthens the Navy-Marine Corps team's ability to respond forward, integrate across domains, and sustain Marine Air-Ground Task Force readiness. (U.S. Marine Corps video by Cpl. Nikolas Mascroft)
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189th Infantry Brigade
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Mission & Vision

Mission: 
189th IN BDE (CATB) observes, coaches, and trains our ARNG and USAR partners to provide trained and ready units to support combatant commander requirements around the world. O/O, conduct Mobilization and Large Scale Mobilization Operations (LSMO) in support of our ARNG and USAR partners to meet combatant commander OPLAN requirements.
Vision: 
Our purpose is to support First Army’s mission to achieve FORSCOM directed readiness and deliver trained and ready NG and RC forces. We accomplish this through partnership with the National Guard and US Army Reserve as FORSCOM’s proponent for the integration of the Army’s Total Force Policy (ATFP) and execution of Mobilization Training Centers (MTC) operations as part of the Army’s LSMO effort.

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