Summary: Mayor Ed Murray drops his reelection bid, clearing the way for a wide-open race for Seattle's next mayor. Democrats call for a special prosecutor to investigate President Trump after he fires FBI director James Comey. Opponents of a proposed safe-injection site for heroin users in King County launch a campaign to ban it before it can happen. And the Kent School District cancels an international trip over concerns that undocumented students might not be able to participate.
