Nowhere, not even in Compean and Ramos' testimony, has anyone said that Davila had a gun or fired it at Compean/Ramos. If Davila had fired at either of them, it would have been the central point of their defense, and the shooting would have been ruled most certainly justified.
I conclude you're just making it up.
My Mistake,,,Hang the Agents...I read about it on WND.