Boston Marathon runners face a little-known six-hour cutoff that can cost them an official time or medal as the historic Patriots’ Day race marks its 130th anniversary.
Dick Hoyt, who inspired thousands by pushing his disabled son, Rick, in a wheelchair in dozens of Boston Marathons and hundreds of other races has died.
Michele McPhee, author of "Maximum Harm: The Tsarnaev Brothers, the FBI, and the Road to the Marathon Bombing" joins Chris McCarthy to discuss the bombing.