USS Callaghan (DD/DDG-994) was the second ship of the Kidd class of destroyers operated by the U.S. Navy. Derived from the Spruance class, these vessels were designed for air defense in hot weather. She was named for Rear Admiral Daniel J. Callaghan, who was killed in action aboard his flagship, the heavy cruiser San Francisco, during the Naval Battle of Guadalcanal on 13 November 1942. Originally to be named Daryush, the ship was ordered by the Shah of Iran, but was undelivered when the 1979 Iranian Revolution occurred. Subsequent to this, the U.S. Navy elected to commission her and her sister ships for service in the Persian Gulf and Mediterranean Sea, as they were equipped with heavy-duty air conditioning and were also well suited to filtering sand and the NBC warfare contaminants.

Callaghan departed San Diego to return to Pascagoula for Post-Shakedown Availability (PSA) on 7 January 1982. The ship stopped at Rodman, Panama, on the 14th, transited the Panama Canal the next day, and put in to Cartagena, Colombia, for a three day port visit on the 16th. After offloading ammunition at Pensacola on 23 January, Callaghan arrived at Pascagoula the next day to begin PSA. During this time, the ship would undergo installation of the Harpoon Missile System and the Phalanx Close-In Weapons System, and improvements would be made to her electronics warfare and communication capabilities. The ship successfully completed sea trials in early June and finished PSA on the 11th. On 12 June, the destroyer once again loaded ammunition at Pensacola and then began the return trip to San Diego, stopping at Rodman on the 17th and Mazatlan, Mexico, from 23–25 June.
With her return to San Diego on 29 June 1982 following PSA, Callaghan’s crew threw themselves into making the ship ready for her first deployment, scheduled for the next year. For the remainder of 1982, the destroyer operated locally, primarily conducting training exercises and assessments. Callaghan spent the first part of 1983 completing refresher training and conducting operational exercises. As a member of Destroyer Squadron (DesRon) 17, the ship participated in COMPTUEX 83-1 in mid-February as well as READIEX 83-3 in early March.

Controls:
Throttle: Drive destroyer
AG1+Throttle: Drive destroyer reverse
AG2+VTOL+Trim: Activate and control forward RIM-66 Standard launcher
AG3+VTOL+Trim: Activate and control aft RIM-66 Standard launcher
AG4+Pitch+Roll: Activate and control Mk.15 Phalanx CIWS guns
AG5: Activate left RGM-84 Harpoon launcher
AG5+VTOL+Trim: Activate and control front Mk.45 gun
AG6: Activate right RGM-84 Harpoon launcher
AG6+VTOL+Trim: Activate and control aft Mk.45 gun
Yaw: Steer destroyer

Credits to @MintLynx for the Mk.45 gun, Mk.15 Phalanx CIWS, RGM-84 Harpoon launcher, and RIM-66/67 missile launcher.

Numbers and Stern nameplate can be changed to sister ships:
DDG-993 USS Kidd
DDG-994 USS Callaghan
DDG-995 USS Scott
DDG-996 USS Chandler