In day one of arguments, the FCC faced tough questions from a three-judge panel on its definition of broadband and potential issues for public safety agencies (Brian Fung/Washington Post)

Brian Fung / Washington Post:
In day one of arguments, the FCC faced tough questions from a three-judge panel on its definition of broadband and potential issues for public safety agencies  —  The Federal Communications Commission faced sharp questioning from a trio of appellate court judges Friday as the agency sought …