I think it is checking gear and then running.

To stop it, just upholsterer your pistol. At the time I was trying to do the 'crab walk' from ARMA II. When you crouch, lower your gun and look down in third person and I stood back up and it started running, all I could do was control direction.

SuperJam:

I would also like greater support for throttle control using analogue. Using a joystick for flying jets is a pain. Its either full throttle or no throttle.

In ARMA II, you can set the controls for analogue throttle. You should still be able to in ARMA 3.

That would be amazing to see as the driving in the last one was far from simulated, it was full throttle or no input (vehicle acted as it had a retarder on, highly annoying when trying to sneak and glide in) or full break.