Why did Oswald go get his revolver?

[Martin Weidmann]

If Tippit had seen that Oswald had a revolver, he IMO wouldn't have gotten out of his car without first having taken his revolver out of it's holster.

The entire encounter is strange.

Oswald had no obvious reason for being at a suburban area like 10th street if he was on the run after killing Kennedy. Unless of course (and here comes the tin foil hat) in case he was told to go there, if whatever he was involved in went wrong. I somehow find that highly speculative possibility more plausible than the theory that a killer on the run takes a taxi (after offering one to a lady) to his rooming house, getting his revolver and then stand at the bus stop in front of the building, before deciding that he would go, of all places, to 10th street instead of walking to Jefferson and get on the first bus.

On the other hand, Tippit had no obvious reason to stop a civilian walking on the sidewalk, but he nevertheless initiated contact (without telling the operator) by calling Oswald to the side of the car to have a conversation with him. They didn't talk long, so what would have caused the massive escalation?

And if we assume that Oswald was the assassin on the run, why would he be so stupid to draw instant attention to himself and his location by killing a cop in front of witnesses? It seems to me this can't be explained by simply claiming he just panicked.

Does this mean Oswald didn't kill Tippit? No, of course not. It just means that none of it makes a great deal of sense, if you really think about it.