Women who need more than 10:30 to finish a mile and males who need more than 8:30 are placed in a remedial group. Men between the ages of 17 and 26 who want to join the Marines must be able to run three miles in under 28 minutes. Women of the same age must run three miles in less 31 minutes. Begin training at least a few months before boot camp. During this time, the recruit will learn how to conduct themselves as Marines by following orders and procedures. The youngest person ever to become a Marine was a 17-year-old from South Carolina who joined the Corps in January 2009. His parents said he wanted to be a marine since he was five years old when his father served in the army. The oldest person ever to become a Marine was a 93-year-old woman from California who enlisted in the Marines after World War II. She told reporters that she wanted to show people that "age is only a number." Marines are considered active duty members of the United States Navy who can be assigned to various tasks within the organization. They generally work on teams called squads, which usually consist of 14 to 20 Marines. There are also infantry divisions within the Marine Corps that include several smaller units such as companies and platoons. These divisions are typically led by a colonel or a lieutenant colonel who has additional staff duties. A recruit spends about four weeks at basic training. This is followed by eight weeks of infantry school if they wish to pursue a career in infantry.