The sheriff's deputy was off duty(no uniform on), in his personal vehicle and he pulled up alongside a car and signaled another car to stop. They did so (I wouldn't have).
He pulls in behind em, gets out and starts to walk towards the car. As he does so, the driver hangs his hand outside the window. The deputy freaked out and fired 8 shots at the car. No one in the other car was hit.
He said he "thought" he saw a gun in the guy's hand. It turned out to be a cellphone.
They never said why he even stopped the car either.
And no I don't have a web link, I just heard about it on the radio driving back from corpus.
eta: Oh and the sheriff's office said he did everything right.
I guess they teach em to shoot first and look what you're shooting at later.