It will be called SAM28000 or SAM29000 depending on which aircraft they use. AF1 is only used when the current president is aboard. AF2 is used when the current vice president is aboard. If anyone is tracking the flight on one of the flight trackers available on the web, the data block will be titled S28000 or S29000. Stuart Bigler ANC ATCT (for another 6 months, then retired ATCS)