Two Officers Killed in Iowa 'Ambush' Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email This undated photo provided by the Des Moines Police Department shows Scott Michael Greene, of Urbandale, Iowa. Des Moines and Urbandale Police said in a statement Wednesday, Nov. 2, 2016. ( Des Moines Police Department / Associated Press ) Produced by PRI and WNYC