The FBI tentatively identified the pilot as Joseph A. Stack, 53. Law enforcement officials, speaking on condition of anonymity because the investigation was still going on, said that before taking off, Stack apparently set fire to his house and posted a long anti-government screed on the Web. It was dated Thursday and signed "Joe Stack (1956-2010)."
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In it, the author cited run-ins he had with the IRS and ranted about the tax agency, government bailouts and corporate America's "thugs and plunderers."
"I have had all I can stand," he wrote, adding: "I choose not to keep looking over my shoulder at `big brother' while he strips my carcass."
Image: Streaks of lights from vehicle traffic is shown, foreground bottom, East and West bound on U.S. 183 in front of a building that was severely damaged when a small aircraft was flown into it, Thursday, Feb 18, 2010, in Austin, Texas.(Photograph copyright AP)