USS NASSAU AMPHIBIOUS READY GROUP, MEDITERRANEAN SEA (Underway) -- Various maintenance sections from Marine Medium Helicopter Squadron 263 (HMM-263) the 24th Marine Expeditionary Unit's Aviation Combat Element (ACE), work to keep their helicopters and planes operational and flying. Whether it is equipment worn by the pilots and crew, or the engines that power the aircraft, there is a maintenance section specified to complete the task. Marines from the ACE can be found working at all hours of day to get their mission accomplished.