Why would explosives be the main focus when the TSA was created to help prevent another 9/11? Explosives don't really help hijack a plane, either. They'll just blow up the plane, wherever it happens to be.The focus on reporting weapons not found is another good example. I don't know but I suspect concealable weapons, per se, are not the main focus of TSA screening. My guess is explosives are.
If they're not catching weapons, they're not stopping another 9/11.