Arriving in San Diego on 21 September, the warship spent the next six months engaged in local operations and preparing for a regular overhaul. This routine was only broken by a call at San Francisco in late January 1982 and four-day visit to Mazatlan, Mexico, starting on 20 February. Entering the Long Beach Naval Shipyard on 29 March, "Berkeley" received new engineering controls, upgrades to her electronic warfare, communications, sonar, and weapons systems—including the new Harpoon weapons system. Perhaps even more important to her crew, she also received a brand new air conditioning system. Underway for sea trials on 18 March, the guided-missile destroyer carried out a series of evaluations, local operations, and refresher training over the summer and fall in preparation for her next deployment. These included underway exercises with the "Kitty Hawk" battle group in September and November.