The USS Flagg (CVN-99) is a Nimitz-Class Supercarrier, extensively retrofitted for the needs of G.I. Joe naval operations. The Flagg sometimes served as a mobile GI Joe Command Headquarters. It was usually commanded by Admiral Keel-Haul. When he was unavailable, the Flagg was commanded by Admiral Ledger. Until 2013, The Flagg was the G.I. Joe Team's primary sea going vessel. It is named for the team's original commanding officer General Flagg, who was slain in combat against Cobra.