The warship put to sea again on 14 September to conduct antisubmarine warfare (ASW) exercises in the western Mediterranean. That same day, the Lebanese president-elect Bashir Gemayel lost his life to assassins. That event and the massacres it sparked prompted France, Italy, and the United States to reconstitute the multinational force that had overseen the PLO evacuation. As a consequence, "Aylwin" broke off from Operation "Display Determination" and hurried east in company with carrier to support the reentry of the multinational force into Lebanon. Except for an 11-day visit to Gaeta, Italy, in mid-October, for repairs and liberty, the frigate patrolled the waters off Lebanon until the middle of November.