You'd be surprised. However, Hassan had a SECRET clearance from our Govt. That should disturb you more. But if the big, mean Army would have taken it away because Hassan was a radical, it might have hurt his feelings.I find it hard to believe that a Soldier in the Army would not pass a background check.
I bought a pistol at the exact same store Hassan did about two years ago. It took all of ten minutes to get screened and cleared. I did it on a lunch break from work.
He walked into a gun shop and bought them.As for Cho...where did his guns come from again?