the flight deck. 254. Carriage of weapons, explosives, and incendiaries by individuals (a) Interpretive rule Subject to subsections (b) and (c), the Administrator shall periodically review and amend, as necessary, the interpretive rule (68 Fed. Reg. 7444) that provides guidance to the public on the types of property considered to be weapons, explosives, and incendiaries prohibited under section 1540.111 of title 49, Code of Federal Regulations. (b) Considerations Before determining whether to amend the interpretive rule to include or remove an item from the prohibited list, the Administrator shall— (1) research and evaluate— (A) the impact, if any, the amendment would have on security risks