February 15, 2018 12:08 am Warning Signs of Suspected Mass Shooters The motive of a 19-year-old man who is suspected of killing at least 17 people at a Florida high school remains unclear but a psychotherapist from Massachusetts says there may have been warning signs. US & World Videos 1:50 ‘It's about joy': Celebrating MLK at Embrace Boston Sneaker Gala 3:24 Forecast: Winter storm hitting New England, here's the latest 8:44 Winter storm hitting Mass., drivers encouraged to stay off the roads 4:33 Forecast: Looking at winter storm's arrival Sunday 0:38 Vt. man rescues dog from icy river