I'm not sure but I dont think it's possible, it would be cool though, to follow other players after dying when there's no respawn rather than the gull.
Not only is it possible, I have
seen and experienced it in several missions. It's Awesome!
Better than BF1942's spectator version!
You can switch to each player , change the view to near , far, top, cinematic and even adjust the distance on some and scroll thru the names of the players to see who is getting blown up!
;D
I'm trying to figure out where the mission makers got this, too ...... It must be an addon. I will try to de.pbo one of these missions and figure it out.