A house in Maryland was leveled in a large explosion on Sunday morning, killing at least one person and damaging surrounding homes in its blast radius, according to authorities.The blast occurred in Bel Air, a town in Harford County, after a gas leak was reported, Harford County fire officials told reporters during a press conference.The fire department initially responded to a reported gas leak, but while still on their way to the home, the home exploded, said Master Deputy of the Maryland State Fire Marshal Oliver Alkire."I’ve been on the job for nearly 18 years," Alkire told reporters. "This is one