>> reporter: they estimate the fugitives if they were together were moving about a mile or two a day because of the expanding parameter in the franklin county area. law enforcement authorities believe they may have been bumping up against the parameter, and they feel the pressure will be on him to stay in one place potentially. >> was this mistake that richard matt made by coughing and giving up his identity and firing a shot at a camper that led them to him, and i wonder if they were working on the assumption he was trying to car jack or why he would shoot at something in broad daylight? >> reporter: that is that a theory, why would you shoot at a moving camper. it's not something law enforcement officials are confirming that would be the motivation, and there is disconnect that the driver of