Yes, I have read that book and several others on the subject and have been blown away. As both an open-minded and scientifically minded skeptic, it would be intellectually dishonest - even foolish - to deny that something extraordinary is going on that is worthy of investigation by science. While most cases can be explained away, about 5% of the cases deserve further study. For example, there are well documented cases of objects spotted moving at speeds of 20 or 30,000 miles per hour and making right angle turns and other impossible maneuvers, backed by both air and ground radar readings, and dozens of eyewitnesses. Or of massive objects the size of a football field gliding at low speeds, with no sound at all, over an entire city, and observed by hundreds of people. Something strange is going on in our skies, and sadly mainstream science and media are dismissing it, even ridiculing it.

Can you point to the documentation of these events?

Read any of the books above or watch this Yotube documentary http://www.youtube.com/watch?v=7vyVe-6YdUk where hundreds of high ranking officials in Govt, military, aviation etc. are willing to go on the record and testify under oath, of some of these events.

That is not documentation. That is eye-witness testimony.

Edit: I won't sit through 2hrs of slow-talking elderly men reminiscing about that time they see some unexplained lights in the sky. It is difficult to take proponents of the ET-hypothesis serious if they always point to such bad evidence.

How would you summarize the argument for UFOs being non-terrestrial for a skeptic who doesn't want to buy and read this book?