Sergeant Kyle M. Crance, weapons and tactics instructor and CH-46E Sea Knight crew chief, Marine Medium Helicopter Squadron 364 (Rein.), 15th Marine Expeditionary Unit, fires a M240D machine gun while flying over the Indian Ocean, Oct. 25. Marine Medium Helicopter Squadron 364 (Rein.), 15th Marine Expeditionary Unit conducted aerial gunnery and tail gunnery training to refresh the skills of eight of the unitâ€™s crew chiefs as well as aerial tail gunnery qualifications for two of their aerial observers. The 15th MEU is comprised of approximately 2,400 Marines and sailors and is currently deployed with the Peleliu Amphibious Ready Group as a theater reserve and crisis response force throughout US Central Command and the US 5th Fleet area of responsibility. Crance, 24, is from Atlanta Beach, Fla.