Almost everything about the U.S. military’s Area 51 flight test facility, also known as Groom Lake, is shrouded in secrecy and mystery. This even extends to the base’s small and unique fleet of HH-60U rescue helicopters, sometimes called Ghost Hawks, which at least help provide security, local search and rescue, and other types of utility support in and around the base.
Read more at https://www.thedrive.com/the-war-zone/30245/area-51-has-its-own-unique-fleet-of-hh-60u-ghost-hawk-helicopters
