Brian Dennehy

My grandfather was a really, really tough no-nonsense factory worker who emigrated from Ireland in about 1900 to Bridgeport, Conn. He had a big effect on me. Those guys who took a great leap out into what they knew not were the ones who were the real stars, the real heroes.

I lied about serving in Vietnam, and I'm sorry. I did not mean to take away from the actions and the sacrifices of the ones who did really serve there... I did steal valor. That was very wrong of me. There is no real excuse for that.

Ironically, it is only when disaster strikes that the shuttle makes the headlines. Its routine flights attracted less media interest than unmanned probes to the planets or the images from the Hubble Telescope. The fate of Columbia (like that of Challenger in 1986) reminded us that space is still a hazardous environment.