Some of the things that are going on at Stanford include my own, Shaw's, Auld's and Quate's work. In particular, one of the things that was mentioned this morning, which I think is very exciting, is Shaw's work on PVF2 plastic transducers. He is obtaining very broad bandwidths of the order of 10 MHz with absolutely flat responses. These are very impressive transducers, and I think they are going to be very important in the future.