A quick skim of the relevant portions of "Crusade" (Rick Atkinson, Houghton Mifflin 1993) does not turn up any mention of lost US tanks (are you certain it was a tank and not, say, a Bradley in which your co-alumnus snuffed it?), although this is not by any means, of course, proof that none were. The book does include an account of a 40 minute engagement on 27 February 1991 in which the 1st Armored Division's 2nd Brigade in "forty minutes...without suffering a scratch...destroyed sixty T-72s and dozens of personnel carriers...All told [I assume from context that this refers to a two-day period at the end of february], the 1st Armored Division destroyed approximately three hundred Iraqui armored vehicles at a cost of one American killed." This was the source of my skepticism anent the Russian account of US tank losses.

cordially,