Don Nelson's Warnings

Could NASA have prevented today's tragedy if they had listened to THIS WARNING by Don Nelson? Mr. Nelson served with NASA for 36 years until he retired in 1999. He wrote to President George W. Bush warning that his 'intervention' was necessary to 'prevent another catastrophic space shuttle accident'. Don Nelson's web site, NASA Problems is a forum for members of the American aerospace community to openly express constructive concerns and solutions for the problems at NASA.