the main threat. the line extends into kansas city and into iowa. now, a chilly chicago. tomorrow, we expect a lot of action along that front. but the main, most damaging storms potentially is detroit and cleveland dayside. texas and oklahoma late in the day, with a larger system impacting dallas. david. all right tracking it into the night, rob, our thanks to you. there s still much more ahead tonight the firebomb attacks. authorities looking for the suspects caught on camera. using molotov cocktails. on a home and a car. the residents were inside. they need the public s help. four minutes of horror, disturbing new reporting tonight in the hate-crime shooting spree. who the gunman targeted and who he spared. and the new discovery in space. the new headline tonight, larger than earth? scientists saying there could be life out there after all. we re back in a moment. predictable. the comfort in knowing where things are headed. because as we live longer. and markets continue