"So, when we did encounter her, there had already  been that stabbing that occurred," Atlanta Police Sgt. John Chafee told  
        Fox 5
      .
Police say Lt. David Cannon then tried to stop Milton  with pepper spray. Unfortunately, Cannon then slipped on the pepper spray and  Milton took the opportunity to bend down and stab him in the leg, according to  the report. It was at that point that Officer Hatley tackled Milton.
Taxi driver Selemon Melkamu told police that he picked up Milton, who is  from Orlando, Florida, from the Kensington MARTA station. During the trip to  the airport, Melkamu says Milton stabbed him in the upper chest near his  shoulder while passing the international sign for the airport on Interstate 285  South. She then grabbed his phone and threw it out the window and onto the  interstate.
After arriving at the airport, Milton walked into the  South Terminal. Police officers and a U.S. Deputy Marshal begin following  Milton. The woman was then observed swiping at a Delta employee with the knife,  police say.
She was then confronted by officers in the terminal.
Lt. Cannon was treated and released at a local hospital.