An officer cuts you off at the gate, what do you do?

So the other day I was driving up to the main gate of a base that will go unnamed for this post; there's 2 lanes that take you to the end of the road at which point they split, 1 lane takes you to the main entrance and the other lane takes you to a welcome center slash parking lot. Since it was in the morning, there was quite a line, so we were all inching our way towards the gate and patiently waiting when an Escalade that was going well over the speed limit on the other lane, as the car in front of me pulled forward, this Escalade accelerated to cut me off and I had to get on the brakes quickly. After this happened I reacted by throwing my hands up as to say "what's your problem?", and the driver looked at me through his side mirror laughing and I could see the passenger turn around laughing. When this Escalade finally got to the guard, the guard saluted after returning ID. I was dumbfounded, yeah sure, he's just another driver right? I don't think so, but that's what this post is for, what does the RP community think?