Traffic advisory 04/19/13 14:31 (dracut - 482.8875/154.40) units on scene motor vehicle accident 2 vehicles into stone wall, emergency medical services evaluating injuries, use caution in area. [mas285] swat/ert 04/19/13 11:04 (watertown - ) units have a man down on the ground threatening to blow himself up, negotiator working [mas198]