 Airports are already busy with July 4th holiday travelers. This woman's at Logan in Boston. It definitely is busier than that's the first thing we said when we were getting off the escalator. So definitely a little busier than usual, but hopefully it will move quick. TSA says tomorrow and Sunday will be even busier. Investigators are still looking into a freight train derailment near Chicago, but say a substance leaking from one of those cars is safe. Madison Mayor Sheila Chalmers-Curran.