 The Tacoma Police Department's arson unit is asking for the public's help in finding whoever's responsible for a string of fires across Pierce County earlier this week. One of them was in the 1100 block of Dock Street. We'd go there and then we'd walk the bridge and go down under there. Look at him crying. Lori and Lori are emotional seeing the area they'd visited many times before now torched, destroyed by a suspected arsonist.