Broward sheriff's office launches internal investigations amid questions after Parkland massacre

Broward sheriff's office launches internal investigations amid questions after Parkland massacre  Washington Post Florida students take on NRA, set eyes on midterm elections  Reuters Fight, flight or freeze? Officers rarely fail to confront threat, experts say  NBCNews.com The Parkland Students Aren't Going Away  The Atlantic Who's the real 'coward' of the Florida school shooting?  Chicago TribuneFull coverage