Not all situations are the same. And I don't have "facts" about this one.
If you have a chance, do you draw your gun and shoot the guy who shot your boss, before he shoots a dozen other people?
Did Gabby's aides have a chance, or was everyone doomed from the start?
Did Gabby's aides have a chance, or was everyone doomed from the start?
Aides are different from security people. Think about how you react to a sudden loud noise. You jump. Once the jumping is over, you then take stock of the situation. In the Tuscon case, the noises continue and you continue jumping and being jostled about by crowd members as your own instincts tell you to get away fast.
From the standpoint of a determined shooter, there was no jumping, he just keeps firing. Depending on his mindset, he is either firing as fast as he can pull the trigger before the crowd is able to disperse, or he is firing aimed shots. My suspicion is his first one or two shots were aimed and then he fired as fast as he could. That Rep. Giffords took a brain shot at point blank range with a 9mm and survived tells me the shooter was using non-expanding ball ammo. Many of the victims were probably hit by the same bullet.