Lance Cpl. Anthony Averill (left), SAW gunner with Animal Company, Battalion Landing Team, 1st Battalion 7th Marines, 31st Marine Expeditionary Unit and Pfc. Marc Calo (right), a rifleman with A Co., BLT, 1/7, 31st MEU, take notes over a lesson in the history book they were given, after a full day of duties and ranges, aboard the USS Denver (LHD 2). - Lance Cpl. Anthony Averill (left), SAW gunner with Animal Company, Battalion Landing Team, 1st Battalion 7th Marines, 31st Marine Expeditionary Unit and Pfc. Marc Calo (right), a rifleman with A Co., BLT, 1/7, 31st MEU, take notes over a lesson in the history book they were given, after a full day of duties and ranges, aboard the USS Denver (LHD 2).