Footage looks choppy/poorly edited.
But it looks like the robbers were prepared for a gun fight, which might explain why one of them "escorted" the unsuspecting female into the backroom. Unless of course, he had something else in mind. It looks like he drew his gun after he heard shots fired.
If only they had footage of the robber who got shot...then the trial would end quickly and not waste tax dollars.
That being said, I don't think I want to wear hoodies anymore...especially when I go to convenience stores.