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