http://www.azcentral.com/news/articl...tterror11.html

"I thought about it a lot after 9/11," said Don Riddle, the law
enforcement officer for the Manti-LaSal National Forest in Utah. "How
hard would it be for someone to get in a small plane and fly over a
forest dropping fusees (flares) or firing off a flare gun as they flew
over?"