The concern over the use of a light plane in such a way predates Sept. 11. In 1994 a distraught man flew a Cessna 150 into the side of the White House, killing himself in the process and causing a small amount of property damage. A troubled teenager shortly after the 9/11 attacks flew a Cessna 172 into the side of a bank building in Tampa, Florida. He also died in the process and damaged the building as well. Last year a distraught Austin, Texas, man flew a Cherokee Dakota into an IRS building in Austin, killing himself and one IRS worker. The fire that resulted caused major damage to the structure.