boris johnson resigned as british prime minister. what happened next is as clear as mud. welcome to the lead. we start today with ow national lead. the father of the suspected gunman of the highland park attack said he consented to his son buying guns in 2019 thinking the son would use the weapons at a shooting range. instead the guns were used in monday s mass shooting that killed seven people. the night before the attack the father said his son mentioned the mass shooting in denmark. the father himself could face charges linked to the rampage. reporter: in the mayhem of the shooting at the fourth of july parade new details emerge from a witness that provided key surveillance video. see m running. he is walking. reporter: a sur rail lance camera connected to a building that recorded that crucial moment with the alleyway used to reach the roof top and fired off more than 80 rounds. started to look at the camera here. shows on the film at 10:07 into the alley and 1