cop. those -- that's what broke the case on friday. >> reporter: richard matt refuses to drop his weapon when a border patrol team surrounds him in the woods. he is shot dead three times in the head. two days later, two miles south of canada police close the case. >> all of a sudden, the streets were just full of law enforcement, cars all the way down. >> reporter: a sergeant on a patrol spots sweat coming down this road. he captured the convicted killer. >> you got him? cool. >> reporter: investigators are now retracing both men's steps. here on the ground, they tell us in his last few days richard matt was moving slow maybe a mile or two a day. david sweat had advanced ahead of him covering a number of miles a day to end up here in this field where he was shot and captured just south of the