 In addition to a 5-inch / 54 caliber gun and two MK32 torpedo launchers; AN/SQS-26 sonar; AN/SPS-48 three-dimensional radar; AN/SPS-40 two-dimensional radar; NTDS (later CDS) computer processing and dissemination of tactical information data systems, other equipment was added including quad-canister Harpoon surface to surface missile launchers and Vulcan Phalanx Close In Weapons System.During her final shipyard overhaul in 1989, "Fox" received the New Threat Upgrade (NTU) combat system which significantly enhanced her warfighting potential.