That is Battlefield 2's default I believe. Like when you were killed out of nowhere, but hear the cracking rifle noise a little bit later.
In FH0.7, you also see awesome stuff like bullet travel time. I was scouting a tank with my binocular from a great distance, when suddenly, the turret turns into my general direction and puff! He fires, and I am mesmerised, not moving at all. Moments later I was sent flying from the HE shell explosion.