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Oberstar is an internationally recognized expert on aviation and aviation safety. He has served on the [[w:U.S. House Committee on Transportation and Infrastructure|Transportation and Infrastructure Committee]] since his first term, and is currently its ranking Democrat. Blatnik had chaired the committee during his last two terms in Congress (when it was known as the Public Works Committee), with Oberstar served as staff administrator. Oberstar was a member of the President's Commission on Aviation Security and Terrorism (PCAST) which was set up in September 1989 to review and report on aviation security policy in the light of the sabotage of [[w:Pan Am Flight 103|Pan Am Flight 103]] on December 21, 1988. An avid cyclist, Oberstar has been a champion of creating trails for cycling and hiking to promote healthy living and more active lifestyles. In 2005 he authored and had passed the Safe Routes to Schools act, a $200 million program that helps school districts address the growing problem of childhood obesity by building biking and walking paths to schools, hiring crossing guards and promoting safety programs.