Jolly Green II developmental testing complete Samuel King Jr. for the U.S. Air Force | April 15, 2021 Estimated reading time 4 minutes, 14 seconds. The Air Force’s new combat search and rescue helicopter, the HH-60W Jolly Green II, completed its developmental test program Eglin Air Force Base, Florida, Apr. 3. A 413th Flight Test Squadron HH-60W Pave Hawk hangs in the anechoic chamber at the Joint Preflight Integration of Munitions and Electronic Systems hangar, Jan. 6, 2020, at Eglin Air Force Base, Fla. The J-PRIMES anechoic chamber is a room designed to stop internal reflections of electromagnetic waves, as well as insulate from external sources of electromagnetic noise. Samuel King Jr. for U.S. Air Force Photo