864 - LIGHT ANTIAIRCRAFT GUN CREWMAN  
[LT AA GUN CREWMAN]

Performs one or more duties incident to the loading, aiming, firing, and minor maintenance of a light antiaircraft gun such as the 40mm.

845 - HEAVY ARTILLERY CREWMAN  
[HVY ARTY CREWMAN]

Performs one or more duties incident to the loading, aiming, firing, and minor maintenance of a heavy artillery piece, such as the 6"/47 cal. or 155mm gun used as either seacoast or field artillery.

797 - NAVAL GUNFIRE SHORE CHIEF  
[NAV GUNFIRE SHORE CHF]

Assists Naval Gunfire Officer (SSN 1115) and supervises enlisted personnel in a shore fire control party.

784 - WEATHER OBSERVER   
[WEATH OBSR]

Uses meteorological instruments to make and record detailed observations of atmospheric pressure, temperature, wind direction, humidity, visibility, and ceiling for aircraft or fire control operations.