Yes, I've got a thing for remembering 9/11/2001 (see the picture on the bottom of my home page). And I have always been intrigued by the closing of the US airspace that day and the days following. (See this photo from Gander International Airport.)

In NetSec Letter #13 from 23 October 2001 entitled "Afterthoughts and Lessons to Learn," I said, How do we know the good guys from the bad? ... Get the good guys out of the sky. The principle demonstrated is important. The fewer potential attack agents, the fewer avenues of attack, the easier your task of protection and detection can be."

I got this book for my birthday from my darling wife. It is a book of wonderful stories of individual's stories describing the affects of that day on stranded travelers and the locals, and how a 10,000-person town doubled in size for a few days. Because of the subject matter, it cannot help invoke tears in some (like me). Over and over again, my heart was touched with the stories of simple caring, one for another. This was a great birthday gift.

"... for I was hungry and you gave Me food; I was thirsty and you gave Me drink; I was a stranger and you took Me in; I was naked and you clothed Me ... Assuredly ... in as much as you did it to one of the least of these you did it to Me."
Matthew 25:35-40

Well, I screwed up. I claimed to have found the source of the quote "He who forgets his own history is condemned to repeat it." I referenced this sort of problem in blog entry Security Redux. I even said, I got it from a "reputable source (i.e., not the Internet)"

Only that sources was wrong. I wrongly credited Sir Walter Scott. When I failed to find the quote anywhere on the Internet, I started to figure I was wrong. (Ironic, eh?)

The quote was wrong as was the author. According to the online version of The Columbia World of Quotations at http://www.bartleby.com/66/29/48129.html, the correct quote is, "Those who cannot remember the past are condemned to repeat it." The attribution is "George Santayana (1863–1952), U.S. philosopher, poet. Life of Reason, 'Reason in Common Sense,' ch. 12 (1905-6)." Measure twice, cut once. Or, in this case, don't believe everything you see on the Internet, but also do not believe everything you read on paper. And maybe Scott did say something along these lines, but I cannot find it.