would call neighbors to ask could we get a hairdresser come in and help my mom look pretty. and a neighbor that would say i saw your tree needs cutting and let me get rid of it out in the country because my mom wants a ride to the country. but for what happened in baltimore, andrea mccarran has been taped it all day and joins us live with the details. reporter: what a tough story. paul warren partis was apparently distraught over his mother s postoperative care. the wounded doctor, an associate professor and orthopedic surgeon, david b. cohen underwent surgery and is expected to survive. moments after a doctor briefed partis about his mother s condition, he opened fire. removed a small semi- automatic handgun from his waist area, waistband area, and fired a single gunshot that struck the doctor in the lower chest, upper abdomen. reporter: as s.w.a.t. teams surrounded the building, the hospital went into lockdown. i m about to leave and i was leaving they said get back