Well, if you mean the rescue I think you mean, it's actually in the Indian Ocean. That's where the Challenger went down. The fuel tank and solids (booster rockets) went down near Florida, but the Challenger went down on the far side of Africa if memory serves me. I, along with others, had the job of analyzing the potential failure modes in the engine controller in the wake of the Challenger accident. It's quite an interesting device, considering it's made of really old and simple TTL logic with plated wire memory (faster, though not much, than core of that generation). It had no stack, and therefore a different way of "calling" a subroutine, requiring you to have your program store in read/write memory. This ultimately meant that flaws masked by the redundancy of the system could become "inherited" from one mission to the next. There were other pitfalls as well. Dick ---------- <classiccmp(a)u.washington.edusome was accident. there dastar(a)siconic.com ---------------------------------------------------------------------------- --