Why did the 2015 San Bernardino mass shooting happen? –...

The annual general education meeting started off normally. In a rented conference room, San Bernardino County Division of Environmental Health Services employees ate from a breakfast buffet and competed for gift cards in a trivia game. Supervisors gave out awards and played instructional videos. The meeting was “mandatory fun,” one person later told the FBI. As staff gathered in front of a Christmas tree for ...