Firefighters were on the scene at 5:15 a.m. At least five were sent to the hospital. (Twitter/ Boston Fire Department) ← Previous Next → Firefighters were on the scene at 5:15 a.m. At least five were sent to the hospital. (Twitter/ Boston Fire Department) Firefighters were on the scene at 5:15 a.m. At least five were sent to the hospital. (Twitter/ Boston Fire Department)