Did he claim anyone else tried to grab his gun?
I believe he stated that 2 of the individuals either did or tried to, and the 3rd had a gun pointed at him. My point was that in every case, he seemed to feel he was at a legitimate risk of being killed or badly injured, and consistently seems to have withheld his fire until he felt he had no choice. Doesn't seem like panic to me, even if he was in the wrong.