SWAT team members joined Milwaukee County deputies and hospital security in an effort to end a dangerous situation Monday.  A 43-year-old physician at Medical College of Wisconsin had pointed a gun at another worker Christmas day, then threatened to kill himself.  Law enforcement officers searched the hospital for Doctor Wayne A. Hendrix before finding he had barricaded himself in a room.  When the SWAT team entered the room, they found the doctor was dead.  Frodtert Hospital confirmed the suicide.  Nobody else was injured.