Huh. Looks like they provide an escort, too:
Canadian NORAD fighter pilots, flying the CF-18, take off out of Newfoundland to intercept and welcome Santa to North America. Then at numerous locations in Canada other CF-18 fighter pilots escort Santa. While in the United States, American NORAD fighter pilots in either the F-15 or F-16 get the thrill of flying with Santa and the famous Reindeer Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner, Blitzen and Rudolph. About a dozen NORAD fighters in Canada and the United States are equipped with Santa Cams.
ETA: Oh my lord. If you go to NORADsanta.org, be sure to check out the “Celebrities” page. It’s...interesting. (Who?...Who?...What?...Oh yeah, him...Ouch—poor, poor “David_Boreanas” (sic)...OMG EDWARD JAMES OLMOS EEEEEEEEEEEE!)