http://nypost.com/2015/02/24/new-jersey-home-explosion-leaves-people-critically-injured/ The fire chief was about 50 feet from the unoccupied house, where workers suspected the gas was leaking, when a fireball burst into the sky and a shock wave knocked several people on their backs and pounded their eardrums. Glass, wood and insulation rained down; strands of pink fiberglass hung from the pine trees like wispy strands of cotton candy. “It happened so quickly, the explosion, debris all around us coming from nowhere,” Johnson said. “It knocked you off your feet, a shock wave, the concussion of it. It’s something I never want to experience again.” In that instant — captured on a police cruiser’s dashboard camera — 15 people were injured, two of them critically. Johnson was one of six firefighters and two emergency medical service technicians to sustain concussion-like injuries. All but one had been treated and released from hospitals by Tuesday evening. Seven gas company workers also were injured, including two critically who were within 20 feet of the house when it blew up.