During the next three years, "Thetis Bay" operated along the Atlantic coast and in the Caribbean. The highlight of her service with the Atlantic Fleet came during the Cuban Missile Crisis in October 1962 when she proceeded to the quarantine area with her embarked marine landing team and helicopter squadron ready for action. In September 1963 "Thetis Bay" proceeded to hurricane-stricken Haiti. She anchored off Port-au-Prince and launched Marine helicopters carrying medical aid and food supplies to thousands of victims of Hurricane Flora.