which outlines the standards for U.S. armed forces riot-type shotguns with regards to accuracy, endurance, ability to withstand rough handling and the effectiveness of the supplied heat shield.

Nice thing about steel is that tiles can be very thin, unlike carbon fiber or aluminum airframe. The first stage super heavy booster does not require a heat shield because it only reaches mach 8 or 9.

which outlines the standards for U.S. armed forces riot-type shotguns with regards to accuracy, endurance, ability to withstand rough handling and the effectiveness of the supplied heat shield.