King County Executive Dow Constantine will step down before his tenure ends after being hired as Sound Transit's next CEO.On Thursday, the Sound Transit Board of Directors approved Constantine to serve beginning April 1.

Analyze Dow Constantine's Sound Transit role and board dynamics. Discover potential conflicts impacting the agency's future.

Dow Constantine praised the progress the county has made in his 15 years as executive, extolled the value of government and its workers, and pointed to challenges ahead.