An important part of scouting is earning ranks. There are seven ranks in Scouts BSA: Scout, Tenderfoot, 2nd Class, 1st Class, Star, Life and Eagle. The first four focus on learning basic scout skills, including camping, cooking, swimming, first aid (basic medical care), citizenship, orienteering (use of a map and compass), and pioneering (tying knots). The final three focus on earning merit badges, serving the troop and serving the community. Eagle Scouts must plan and finish a project that benefits something other than Scouting, and earn 21 merit badges. They must also hold a position of leadership in the troop. Only about 2 or 3% of Scouts earn Eagle, but some of the ones that have include Gerald Ford and Neil Armstrong.