When young people enlist in the Marines, Their first stop is boot camp. There they receive intensive, basic training geared to carry them across the threshold from civilian to military life. The major purpose of boot camp is to develop the character that will sustain a Marine in the crisis situations of battle. This is partially done through gruelling physical disciplines designed to build both muscle and stamina. But even more important are the psychological conditionings necessary to ensure that every Marine believes in the mission of the Marine Corps, develops courage and self-discipline, and is fully prepared to submit to authority and obey commands with no questions asked.