Keywords: US Navy 050106-N-1550W-001 Two MH-53E Sea Dragon helicopters, assigned to the Black Stallions of Helicopter Combat Support Squadron Four (HC-4), fly in formation in front of Mount Etna.jpg en Mount Etna Sicily Jan 6 2005 - Two MH-53E Sea Dragon helicopters assigned to the Black Stallions of Helicopter Combat Support Squadron Four HC-4 fly in formation in front of Mount Etna the largest active volcano in Europe HC-4 is assigned to Naval Air Station Sigonella Sicily U S Navy photo by Photographer's Mate 2nd Class Elizabeth Williams RELEASED 2005-01-06 050106-N-1550W-001 Navy http //www navy mil/view_image asp id 20598 U S Navy photo by Photographer's Mate 2nd Class Elizabeth Williams PD-USGov-Military-Navy Aerial views of Mount Etna Sikorsky MH-53E Sea Dragon in flight Helicopter Combat Support Squadron 4 United States Navy |