well, this is the first time im seeing the MCI rig, and i can see how it gets mistaken for an ambulance. I see the red/white bus and the all white bus all around DC. The only notciable features that ive come across are the difference in unit # Medic (double digit) vs. RA-(triple digit) and ive also never seen the white ones in quarters before. all the firehouses i pass have the red/white units.