Black Hawks Three Army UH-60 Black Hawk helicopters take off to depart the San Juan Army National Guard Aviation Support Station in San Juan, Puerto Rico, Sept. 18, 2017. The task force is moving aircraft to Aguadilla, Puerto Rico, to continue humanitarian assistance and disaster relief missions once the storm passes. Marine Corps photo by Sgt. Melissa Martens SHARE: Download: Full Size (0.94 MB) Tags: humanitarian assistance, hurricane maria, northcom, northern command Credit: Sgt. Melissa Martens VIRIN: 170918-M-CK972-006A.JPG Photo Gallery