Basic Economics - Thomas Sowell. Everyone should be required to read this book; you will gift this to your favorite high school or college graduates. (Apologies if I missed this in other posts.)
Yeager - Autobiography of Chuck Yeager Breaking the sound barrier was the most boring thing he did!
Blind Man's Bluff - The Untold Story of American Submarine Espionage - Written after much top secret documentation was released and covers submarine development and stories about how subs were used in various spy and other missions.