by Larry E. Joyce USA TODAY October 20, 1993 U.S. Army Rangers are the most highly motivated and best-trained soldiers in the world. They volunteer four times: They volunteer to be soldiers. They volunteer to be paratroopers. They volunteer to serve in one of three elite Ranger battalions. Then, they voluntarily stay in a Ranger unit despite grueling physical and emotionally draining assignments. They are kept in places like Panama, England, Korea, Egypt and Thailand for weeks at a time. They can walk away and join a less demanding assignment any time - no questions asked. They are a national...