Marines discuss their network hacking plans during Cyber Yankee 21 on Camp Edwards in Massachusetts, June 14, 2021. Reserve Marines with Company B, Defensive Cyber Operations (DCO), Force Headquarters Group, are playing the "red team," or attack role in Cyber Yankee 21. Defensive Cyber Operations companies are trained and geared to support the Marine Expeditionary Force Information Group, Marine component headquarters, or a combined/joint task force headquarters in order to enable and enhance the warfighting abilities of a commander. (U.S. Marine Corps photo by Lance Cpl. Mitchell Collyer)