. >> reporter: among those feeling very grateful today is theo dus westbrook who feared he had lost hiswn son in the shooting spree. >> what jonathan? not my jonathan, not my son. >> reporter: his son survived after being wounded in the chest and arm by a gunman identified as specialist ivan lopez. westbrook says he was told that the shooting began at his son's human resource office after lopez got into an argument with others and was told to come back later after requesting a leave of absence form. lopez returned with a hand gun and shot three people there. >> it was like he was saying, okay, buddy, you're next without actually saying that, and my son, you know, is reading all this from the shooter's eyes. then he pulled the trigger and shot my son. >> reporter: a new aerial diagram released by the u.s. army showed the shooting spree covered a two-block area and involved six buildings. westbrook was shot inside the 49th transportation headquarters. lopez got in his car and fired at others as he drove. after being confronted by a military police officer in a parking lot he then shot and