HARRISONS MAKING DOUBLE TROUBLE FOR OPPONENTS BRISBANE, Australia (AP) - They think, talk, act and run alike -- and they're making history together. They're the Harrison brothers -- Alvin and Calvin -- the first twins to make a U.S. Olympic track team. "We've already made history by being the first twins on the team, now we want to add to it," Alvin said. They will get that opportunity at Sydney, hoping to run in the 1,600-meter relay final, win gold medals and break the world record. Alvin is virtually assured a place on the relay team, after finishing second to Michael Johnson in the 400 meters at the Olympic trials in Sacramento, Calif., last month. Calvin was fifth at the trials and he is contending with his brother, plus Johnson, third-place finisher Antonio Pettigrew and fourth-place finisher Jerome Young for a spot in the final. Even if the brothers don't run in the final, they would still earn gold medals if they run in preliminary rounds on the way to a U.S. victory. Alvin already has an Olympic gold. He ran the second leg on the winning 1996 team that included Lamont Smith, Derek Mills and Anthuan Maybank and was timed in 2 minutes, 55.99 seconds, the fourth-fastest in history. *** For the full Harrison brothers feature, see http://www.infobeat.com/stories/cgi/story.cgi?id=2569303714-e46