If your kids are like mine they will want to watch this -- NASA's Kennedy Space Center shared this update:
NASA’s Shuttle Carrier Aircraft (SCA), a modified 747, is now scheduled to arrive at Kennedy Space Center in Florida at about 4 p.m. EDT, an hour earlier than originally planned.NASA Television will provide live coverage of the SCA’s arrival beginning at 3:45 p.m. http://go.nasa.gov/ib3NA4
This will be 2:45 to 3 p.m .CST.
Go here to read CBS story about the shuttle carrier and a delivery happening later this month.