An M1 Abrams prepares for a mechanized assault during Steel Knight 2015 aboard Marine Corps Air Ground Combat Center Twentynine Palms, Dec. 13, 2014. SK15 is an annual exercise designed to train and prepare the 1st Marine Division for deployment as the Ground Combat Element (GCE) of a Marine Air-Ground Task Force (MAGTF).
<br>Unit: I Marine Expeditionary Force
Lance Cpl. Jonathan Boynes
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