Two U.S. Marine Corps AV-8 Harriers fly in formation after conducting aerial refueling training on Sept. 23, 2012. MV-22B Ospreys and AV-8B Harriers are conducting aerial refueling with the KC-130J Hercules planes to practice the skills needed for long-range flight operations. The aircraft are part of the 24th Marine Expeditionary Unit, which is deployed with the Iwo Jima Amphibious Ready Group.