Just arguing for something that increases risks terribly for an absolute view of rights is just not supportable. The BOR isn't a suicide pact.
I suppose one could argue that the right to keep and bear arms implies that a private citizen could own a nuclear bomb and take it on the plane also.
Why not grenades?
We've had folks argue here that the Constitution supports owning such. So toss one down the aisles at the hijacker.
Mleake nailed it.