An interesting aside. My uncle, Ed Czarnecki was, I believe, at one point in charge of the Boeing military hydrofoil projects, primarily the Pegasus class. He died in the late 70's or early 80's. I lived with him and his family when I started law school in 1974 and heard lots of stories about the program. He was a huge fan of hydrofoils. He and his brother Kaz graduated from the U of Alabama in what I have heard, was one of the first aeronautical engineering programs back in the late 30's. Kaz went on to work his entire career with Nasa and was the model for Karl Zielinski in the movie "hidden figures". Quite a family..until I came along.