Corrections
An article on July 7 about security lapses at American bases in Saudi Arabia  misstated the role of the Central Intelligence Agency in assessing the threat of terrorism there. The agency did not reach an official conclusion that Saudi terrorists could not build a bomb larger than 200 pounds.
The article was based on information provided by senior Air Force officials  and other Administration officials. The C.I.A., in a letter to The Times, said that this was not accurate, and that it had produced "no assessment, analysis or reporting" including such a judgment.
Questioned again, officials cited in the original report said that while they had consulted the C.I.A. on the potential threat posed by Saudi militants, they  had never asked the C.I.A. for a specific analysis of the size or type of bomb terrorists might use in attacking American servicemen in Saudi Arabia.