The Tribune photo, dated July 21, 1989 has the following caption on the back: "A Free Preview of the 20th Annual Livermore Airshow thrilled crowds of disabled veterans and other guests on Wednesday. Above, Jerry Davis [not shown] of Castro Valley, does acrobatics in his biplane. Ray Dias demonstrated precision parachuting, right, for the crowd, which included veteran John Perry, 78, below........ The show features Sean Tucker, 1988 national champion in advanced aerobatics, wing walker Johnny Kazian, the Califiornia Parachute Club, and "Zar, the aerobatic alien from Planet Zon," ............" The photo shows Dias touching down into a horizontal net, while spectators look slightly upward.