Stallion Launch A Marine Corps CH-53 Sea Stallion prepares to launch from the USS Boxer in the Pacific Ocean, Dec. 12, 2015. The Boxer Amphibious Ready Group is underway off the coast of Southern California completing a certification exercise. The Sea Stallion is assigned to Marine Medium Tiltrotor Squadron 166. U.S. Navy photo by Petty Officer Seaman Eric C. Burgett SHARE: Download: Full Size (1.15 MB) Credit: Seaman Eric C. Burgett VIRIN: 151212-N-OF476-003.JPG Photo Gallery