like a presidential contender. jeb bush spreads his wings on the national stage. he is embracing his family legacy while keeping it at arm s length. calling himself his own man. those are some of our top stories on this february 19th. announcer: from abc news, this is world news now. weather, it s cold. not snow this time. it s the cold we are dealing with this round. really cold. really cold, folks. half of the country from chicago east could see record low temperatures overnight. not going to warm up much during the day. the public school in chicago closed today because of the cold. abc s matt gutman is on it for us. reporter: a nation bracing for record cold. in tennessee, a state of emergency. this plane at nashville s airport encrusted. streets so frozen you can skate on them. beneath the layer of frozen snow the hidden danger of black ice. in nashville, a car just missing this police cruiser. it is about 10:00 a.m. and we