A dramatic rescue Sunday in Dallas when firefighters got an unusual 911 call, saying a man was lying on the ledge of the Margaret Hunt Hill Bridge that’s still under construction over the Trinity River.  Firefighters saw the man’s predicament and called in help from the Urban Search And Rescue team who put the construction worker into a basket and lowered him forty feet to the ground.  The Commander says it was quite a tricky rescue because of the height and the narrow ledge.  The man was taken to the hospital to be treated for very low blood sugar.