Gina McCarthy, the U.S. Environmental Protection Agency Administrator, congratulates Marine Corps Air Station Miramar, California on receiving the 2015 EPA Federal Green Challenge Award for Energy at the public works building on Marine Corps Air Station Miramar, California, May 20. The station received the award because it had the greatest percentage reduction in energy use nationwide in 2014. - Gina McCarthy, the U.S. Environmental Protection Agency Administrator, congratulates Marine Corps Air Station Miramar, California on receiving the 2015 EPA Federal Green Challenge Award for Energy at the public works building on Marine Corps Air Station Miramar, California, May 20. The station received the award because it had the greatest percentage reduction in energy use nationwide in 2014.