Today, May 10, I learned that Ivan had passed on. It was a shock. My plans were to email him and indicate that I would be in London for 5 days from 5/22 and was going to arrange to meet with him. Ivan was a gentleman. We not only went back to our days at the U., but when he was at Ft. Monmouth, we'd get together. For a time, he was in NJ and Alan was on Long Island. He will be missed. Sam Wasserson