You don't really need to board up the windows for the cameras to be a big help. At least in the up armored humvees (the ones with bolted on armor), the side win

You don't really need to board up the windows for the cameras to be a big help. At least in the up armored humvees (the ones with bolted on armor), the side windows were very small, to the point that you had to have a passenger look out their side window to tell you if there was any oncoming traffic, or if it was safe to change lanes.