Sixteen years ago today, I was sitting in a meeting at the Rockwell Space Transportation Systems Division in Downey, California. It was a status review meeting for a contract on which I was working, called the Space Transportation Architecture Study. It was a joint NASA/USAF contract, and its ostensible purpose was to determine what kind of new launch systems should replace or complement the Space Shuttle. Its real purpose was to try to get the Air Force and NASA Marshall to learn how to play together nicely and stop squabbling over turf and vehicle designs (it failed).

It was a large meeting, with many people in attendance from El Segundo and Colorado Springs (Air Force) and Houston, Huntsville and the Cape (NASA) as well as many Rockwell attendees.

As I sat there, waiting for the meeting to begin, one of my colleagues came running into the room, his face white as a freshly-bleached bedsheet. He leaned over and told me and others, in an insistent sotto voce, “I just saw the Challenger blow up.”

We stared at him in momentary disbelief.

“I’m serious. I just came from the mission control center. It just exploded about a minute after launch.”

One could actually see the news travel across the large meeting room as expressions of early-morning torpor transformed into incredulity and shock. More than most people, even with no more information than the above, we understood the implications. While there was speculation in the media all morning that the crew might be saved, we knew instantly that they were lost. We knew also that we had lost a quarter of the Shuttle fleet, with a replacement cost of a couple billion dollars and several years, and that there would be no flights for a long time, until we understood what had happened.

The ironic purpose of our meeting became at once more significant and utterly meaningless. Most of the NASA people immediately made arrangements to fly back to Houston, Huntsville and the Cape, and we held the session without them, in a perfunctory manner.

This was one of those events, like the more recent one in September, that is indelibly etched into memory–where you were, what you were doing, what you were feeling. I’m curious about any inputs from others, either in comments here or email.

Oh, and I should note that it’s an easy date to remember for me–it was (and remains still) the anniversary of my date of birth…