Ok , noticed a few things>>>
1) who is that in the shot with nikolai shooting his min gun? When we see a shot of the camera slightly behind and to the right of nikolai you see a cloaked pred dart out of frame to right avoiding his firing, but you can definately see another figure (looks like pred body- u can see arm/with claw hands) just standing there while nikolai is lighting up brush with his gun. You can see the figure just over top of his gun when he lowers to shoot.
-Could it be a mistake (someone not sure there in frame), or stage hand? Cuz they dont even bother to move while bullets fly right by there ear, and there not even cloaked.
2) I'm assuming the pred shooting the mini gun out of nikolais hands is the final version of what is supposidly the countering pred mini gun from the script, except he doesnt shoot down the bullets just simply takes out the gun entirely. You can tell this cuz the plasma shot comes from what appears like waist area of cloaked figure and it doesnt use the pre -targeted laser guidance of normal shoulder mounted cannon. Also you can hear what appears to be an alien type sound (different than mini gun) of the weapon reving or spinning as it shoots.
3) Some strange sounds...
-aparently some of the new sounds are of resemblance to maybe a shivering animal of some kind (maybe a horse, think mr.ed going brrrrrrr!) lol weird!
-Also i swear at one time I hear what sounds like a top being popped off a sleeve of tennis balls???