rejection saying the change will, quote, add little value to the customer security process flow in relation to the additional risk for our cabin staff and customers. under the tsa's new policy, knives with blades shorter than 2.36 inches and less than a half an inch wide will be allowed, provided the blade does not lock in place. larger knives, raizer blades, ad box cutters are still banned. tsa administrator john pistol says it will help screeners focus on things that will bring down an aircraft, like bombs. >> the key factor for me, that may detract us, may, detract us from that item that could be catastrophic failure to an aircraft. >> reporter: the chairman of the house homeland security, says the tsa's priorities must be securing commercial aviation from the type of threats and