shell's chemical base) to neutralize it completely. The shell offers little to almost no protection from lasers in certain episodes. The shell is a combination of three secret substances together referred to as the Knight Compound, developed by Wilton Knight, who entrusted parts of the formula to three separate people, who each know only two pieces of the formula. The shell provided a frame tolerance of 223,000 lb (111.5 tons) and a front and rear axle suspension load of 57,000 lb (28.5 tons). In the pilot, "Knight of the Phoenix", the shell is described as the panels of the car itself; in later episodes, especially from season two onward, the idea of the shell being applied to a base vehicle chemically is used. KITT is also protected by a thermal-resistant Pyroclastic lamination coating that can withstand sustained temperatures of up to 800 degrees Fahrenheit (426 °C). First used in Episode 32, "Ring of Fire". KITT can tint the windshield and windows to become opaque (First seen in Episode 14, "Give Me Liberty... or Give Me Death") and can also deflate and re-inflate his tires (First used in Episode #5 "Slammin' Sammy's Stunt Show Spectacular"). KITT's tires can produce traction spikes that allow KITT to overcome steep terrain. First seen in Episode 86 "Hills of Fire". KITT has two front ejection seats, mostly used when Michael needed a boost to fire escapes or rooftops. First used in Episode 1, "Knight of the Phoenix (Pt. 1)". KITT also has a hidden winch and grappling hook system. Most often the hook is connected by a strong cable, but a metal arm has also been seen. The grappling hook is first used in Episode 6, "Not a Drop to Drink"; the winch is first used in Episode 13, "Forget Me Not". KITT has a hidden switch and setting dial under the dash that either completely shuts down his AI module or deactivates certain systems should the need arise. First used in Episode 17, "Chariot of Gold". He also has a function which can be activated in order to completely lock the AI from all the vehicle controls, such as preventing KITT from activating Auto Cruise or anyone inside the car from doing something that would probably hurt them. KITT is still able to protest such actions vocally. First used in Episode 8, "Trust Doesn't Rust". KITT's headlights can flash red and blue as police