Police chief describes events unfolding as KCK police captain tracks Costco gunman through the store

Costco surveillance video released by Lenexa police shows off-duty KCK Capt. Michael Howell tracking the gunman through the store as customers flee. Lenexa Police Chief Tom Hongslo describes the tactics Howell used and the events as they unfold.
Jill Toyoshiba and Joe Robertson The Kansas City Star