Crewmembers aboard the Coast Guard Cutter Active conduct vertical replenishment exercises with an aircrew aboard a MH-65D Dolphin helicopter from Air Station North Bend, Ore, as the cutter transits through the Strait of Juan de Fuca, Wash., Dec. 21, 2017. A vertical replenishment is a method for delivering supplies, gear and equipment to underway cutters via helicopter. U.S. Coast Guard photo by Ensign Ivonne Lassalle.