Luck, not training

That's a good way to hurt yourself and makes aiming harder,

Cut him some slack his training was in Compton, ghetto gun training

Oh no.. another good guy with a gun...

Proving even a good idiot with a gun is a better idea than a gun free zone.

True. So true.

Everything.
And this guy is a Marine???

I doubt that

Certainly not in a combat role.

Thats Ghetto gun holding training not the Marine training or any other military branch

With the support hand thumb on top of the slide?

A man with a gun sideways, trumps a man with a knife.