ladder that was attached to the building. he fired, climbed back down and somehow got away. a rifle was recovered at the scene. the atf is tracing the firearm. the way this works is, they will trace the firearm to the original owner. if it was sold to other people, they will trace that as well. and then the atf will visit that owner or owners to find out if there s any link between that person and a potential suspect. high pressure s police commander is urging people to shelter in place as authorities search for the suspect that is still at large at this hour. we re talking five hours after the shooting. this comes two weeks after the president signed a bipartisan gun law that is meant to dwell the scourge of mass shooting in the united states. the president condemned the shooting and offered support to members of the high pressure community. we expect him to speak any moment during his fourth of july address. we have fox s peter doocy is at the white house with president bid