A P-3C Orion wearing a heritage paint scheme soars over NAS Jacksonville, Florida, as part of the base’s Centennial of Naval Aviation celebration on 4 April 2011. The aircraft is painted like a Vietnam-era EP-3B electronic reconnaissance variant flown in a classified program called Bat Rack. The US Navy is observing the Centennial of Naval Aviation with a series of nationwide events celebrating 100 years of heritage, progress, and achievement in naval aviation.