The new Transit Rider Investment Program starts today in the Twin Cities. Agents will ride trains and check fares as part of Metro Transit's broader safety and security action plan. And more details have been released about the Burnsville standoff where three first responders were killed Sunday. Shannon Gooden eventually fired more than 100 rifle rounds at law enforcement and first responders, the Minnesota Bureau of Criminal Apprehension said.This is an MPR News morning update, hosted by Phil Picardi. Music by Gary Meister.Read the latest edition of the AM Update newsletter.Subscribe on Apple Podcasts, Google Podcasts, Spotify, YouTube or RSS.