version. Almost all USAF aircraft now use low-visibility roundels in black or gray, with the full-color version limited to a small number of uncamouflaged aircraft such as the E-3 and E-8. Partly due to the 1964 adoption, and early-April 1967 display initiation of the "racing stripe" insignia on its fixed-wing aircraft, the United States Coast Guard, unique among U.S. military organizations, uses the standard high-visibility roundel on the vertical fin of its fixed-wing aircraft as a fin flash. Insignia Official dates refers to when a new insignia was officially ordered but implementation was not always immediate. Fin flashes and rudder stripes See also Tail Code RCAF post-WW II roundels Royal Air Force roundels Military aircraft insignia References Bibliography Section 40.1.1.2 Color of MIL-STD-2161A (AS), the colors of this insignia are established as FED-STD-595 red 11136 white 17925 blue 15044. Visualization of colors is from http://www.colorserver.net/showcolor.asp?fs=11136+17925+) External links U.S. Naval Aircraft Marking page on USN Naval History and Heritage Command site United States Air Force United States Army Air Forces Heraldry of the United States military United States Navy United States Marine Corps Civil Air Patrol Aircraft markings