Sgt. 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 unit’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 embarked as part of the Peleliu Amphibious Ready Group, while they serve as the nation's rapid-response sea-based Marine Air Ground Task Force for Western Pacific Deployment 12-02. Crance, 24, is from Atlanta Beach, Fla.