Semi-retired professor of Geoscience, consultant on environmental and aerospace issues. Emigrated from UK, 1969; US Army active-duty 1969-73; active reserve 1974-99 (retired at 0-6). US citizen since 9 July,1974.
Leading proponent of nuclear propulsion in spaceflight (see homepage).
Bio-facts: 59, Jewish, married (3rd time, divorced and widowed respectively) 2 grown children, 2 grandchildren. Grandchildren are the big payoff.

A story:
A Jewish man boards the train heading for Texas.
On the third day the train is stopped in the middle of the desert and big Texan men board the train and bellow out,
"Are there any Jews on this train?"
The man crunches down in his seat and again the huge voice:
"Any Jews on this train?"
He shrinks deeply into the seat. This great big Texan wearing two pistols is now standing over him and roars,
"ANY JEWS ON THIS TRAIN?"
The man gains his courage, sits up straight and says,
"Ich bin a Yid" (I'm a Jew!)
And the Texan replies,
"Good! We need a tenth man for the Minyan."
(to hold Jewish prayer services there have to be at least ten Jewish men.)