The images are more than four-and-a-half years old: a plane hitting the Pentagon on September 11, 2001.

They are blurry, but powerful. A reminder of evil: clear and present danger then — forgotten, save for reminders like these pictures now.

But as we close in on the five-year anniversary of that horrid day, we're going to get a lot more reminders of the evil of that day. Reminders of men who used our planes against us and our own institutions that failed us.

I say, all this is good for us. It's good that we examine and better yet that we criticize.

I'm just hoping it's all to the same end: that it not happen again.

I'm not smart enough to say collecting phone records is a way to do that now. I just wonder if having done so, we might have prevented what happened then.

There was a lot of talk about chatter then, but we didn't connect the dots.

I'm told a lot of chatter now, but we're trying to connect the dots.

It's odd that these images hit our senses as this debate over freedoms hits our headlines.

I'm glad we're shouting about it. I'm frankly glad we're alive to do anything about it. I just hope we learn something from it, so as not to ever, ever, repeat it.

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Neil Cavuto serves as senior vice president, anchor and managing editor for both FOX News Channel (FNC) and FOX Business Network (FBN). He is anchor of FNC's Your World with Cavuto - the number one rated cable news program for the 4 p.m. timeslot - as well as the FNC Saturday show Cavuto on Business. He also hosts Cavuto on FBN weeknights at 8 p.m. In addition to anchoring daily programs and breaking news specials on FNC and FBN, Cavuto oversees business news content for both networks and FNC's weekend business shows, including Bulls & Bears, Forbes on Fox, and Cashin' In. Click here for more on Neil Cavuto.