Peter Steinmetz is the Director or the Neuroengineering program at Barrow in Phoenix. On Friday, the doctor was observed in terminal 4, ordering coffee at the Starbucks while carrying a rifle over his right shoulder. When confronted, Steinmetz says he was there to buy a cup of coffee only according to court paperwork. He then walks away and stops in front of some gates -- on the non-secure side. Witnesses say that's where he removed his rifle from his right shoulder, causing the muzzle to face a mother and her 17-year-old daughter. Both say they feared for their safety. Police were called and Steinmetz was taken to jail.