In late 1986 and early 1987, "Coontz" underwent a work up period in preparation for deployment to the Persian Gulf on 5 February 1987. During her deployment, she served under the Commander, Middle East Forces. "Coontz" was tasked with ensuring the safe passage of all U.S. vessels as well as maintaining U.S. presence in the Persian Gulf during the escalation of the Iran–Iraq War. Commander Gnerlich was relieved as Commanding Officer by Commander William W. Cobb, Jr. on 11 April 1987. During deployment in the Persian Gulf, "Coontz" provided firefighting teams which aided in the rescue of USS "Stark" and her crew after she was struck by Iraqi Exocet missiles. "Coontz" returned to her home port of Norfolk, Virginia on 5 August 1987. Following a three-month maintenance availability (SRA) she operated as part of the United States Second Fleet until the end of her career.