Both the US Navy and US Air Force experimented with camouflage schemes created by aviation artist Keith Ferris, but none of these schemes saw widespread operational service. Lt Commander Chuck "Heater" Heatley of the Naval fighter Weapons School proposed a modification to the Ferris scheme. At first adding a false canopy on the bottom of the the aircraft. Later, simplifying the pattern from the "splinter" pattern associated with the Ferris schemes, running the various shades of grey across the entire aircraft.Despite the Navy findings that the "Heater-Ferris" scheme was not only effective in making visual detection more difficult, but also determining the attitude and direction of the aircraft, only two fighter units adopted the scheme: VF-302 (Stallions) applied the scheme first, then VF-301 (Devil's Disciples) applied the scheme in a mirror image of their sister squadron. VF-301 began applying the scheme in late 1982 and kept it until they turned in their Phantoms for F-14As in 1984.