neroZzero-2035 "me_sidewalk1" It is the floor with gray barks where the tank and the vehicles are. But I don't know about files with " _col.iw"
Separately, I have another concern and it is whether there is a way to correct, replace or improve the sound of the weapons in MW3. Since there are some weapons that sound better in other versions of CoD, in real life, or in movies (for example: The Model 1887 in Terminator 2).
Additionally, I noticed that some phrases warning about certain activated killstreaks (example: "Friendly Chopper" instead of "Friendly Cobra") have been changed. In that case, it would be very cool if you could give more impact to the "the enemy have Juggernaut" alert, adding that intimidating sound of the MW2 juggernauts in the background.