spotting and directing aircraft and operating aircraft-handling    equipment,    such    as    tractors    and cranes.  Also  included  in  this  division  is  the  aircraft crash,  fire,  and  rescue  party.  This  crew  is  under  the direction of the aircraft crash and salvage officer. They are  responsible  for  flight  deck  fire  fighting,  rescue, clearing flight deck crashes, and maintaining crash and fire-fighting equipment. V-2 Division Personnel   in   the    catapult   and   arresting   gear division  are usually assigned to one of two crews. The catapult    crew    is    charged    with    the    operation    and maintenance  of  all  catapult  machinery.  The  arresting gear    crew    is    responsible    for    the    operation    and maintenance    of    the    arresting    gear    and    barricade equipment.   Occasionally,   the   catapult   and   arresting gear crews assist in clearing flight deck crashes. V-3 Division The   hangar   deck   division   is   charged   with   the handling   of   all   aircraft   on   the   hangar   deck.   Other responsibilities include operation of aircraft elevators, hangar    bay    doors,    and    roller    curtains.    They    also maintain   assigned   fire-fighting   equipment,   such   as sprinkler systems, water curtains, and foam monitors. Certain personnel from the V-3 division are assigned to the  conflagration  (fire)  control  stations  on  the  hangar deck. Repair 1A (hangar deck forward) is operated by personnel from the V-3 division. V-4 Division The   aviation  fuels  division   is  charged  with  the operation  and  upkeep  of  the  carrier  aviation  fuel  and lube oil transfer system. This also includes the inert gas producer   and   distribution   systems   (when   installed). They service embarked aircraft with clean, uncontaminated fuel, and replenish the ship's supply of aviation fuel and lube oil. WEAPONS DEPARTMENT In general, the weapons department is responsible for   the   requisition,   receipt,   inspection,   unpackage, inventory, account for, store, assemble and process for shipment  of  the  following  weapons:  air/surface  and sub-surface missiles, bombs, rockets, and components, including  aircraft  guns  and  accessories,  ammunition handling  equipment,  and  aircraft  arming,  suspension, launch and release equipment. The weapons department  is  also  responsible  for  loading  and  fusing aviation     ammunition,     and     maintaining     shipboard weapons elevators, magazines, sprinkler systems, and ammunition storage facilities. ENGINEERING DEPARTMENT The engineering department is responsible for all machinery,     propulsion,     ventilation,     water     supply, piping    systems,    electrical    systems,    and    electronic devices on board the ship. NAVIGATION DEPARTMENT The  navigation  department  is  responsible  to  the commanding officer for the safe navigation and piloting of the aircraft carrier. This department also trains deck watch  officers,  orders  navigational  equipment  for  the ship, and provides for its upkeep. SUPPLY DEPARTMENT The  supply  department  handles  such  matters  as ordering, receiving, storing, issuing, and accounting for all supplies needed for the ship's operation. MEDICAL DEPARTMENT The medical department is responsible for maintaining the health of all personnel and advising the commanding    officer    in    matters    of    sanitation    and hygiene. DENTAL DEPARTMENT The  senior  dental  officer  is  responsible  for  the dental    care    and    oral    hygiene    of    the    personnel aboard. AIRCRAFT INTERMEDIATE MAINTENANCE DEPARTMENT (AFLOAT) To   improve   fleet   readiness,   the   Chief   of   Naval Operations established an aircraft intermediate maintenance  department  (AIMD)  on  aircraft  carriers. The  AIMD  assumes  the  entire  responsibility  for  the intermediate maintenance effort on the carrier. Therefore,  relieving  the  air  wing  commander  of  the responsibility of providing O- and I-level maintenance for aircraft assigned. AIMDs   are   organized   in   a   manner   similar   to shore-based   aviation   maintenance   departments.   See 2-15