6PM

               Union Station, that gorgeous fifty-year-old monument to Art 
               Deco/California Mission architecture. Still beautiful. Still 
               grand.

               A sign at one of the departure/arrival gates in the main 
               concourse-says the "San Diegan", number 2 64, is due at 12:00.

               Set above the gates, a big clock - six feet in diameter.

               THE TIME -

               12:06.

               We see the big