How about we go all Barney Fife? When you board the plane, you are issued a gun with one bullet. Everyone gets issued. If you don't want the gun, or have issues with guns, you don't fly. You and your emotional emu have to get off the plane. If anyone pulls any shit, they only have one bullet, and the other 187 passengers have one too. I don't think those odds are very good.
On a serious note, get rid of them all. Little by little, inch by inch, we give up our freedoms. TSA is nothing more than a 'feel good' cluster foisted on us. Typical knee jerk reaction to an incident more than three standard deviations from the norm.