AT A SEAL BASE, Somewhere in Vietnam — The Navy Seals are a slippery bunch of characters who live up to their name by pulling off operations that are really hairy. More than 100 of these daring ...

What You Need to Know: The Smith & Wesson Model 39, inspired by the German Walther P-38, became the first American nine-millimeter pistol used by U.S. Navy SEALs during the Vietnam War.