In the late $1990$s$,$ the U$.$S$.$ military faced recruitment and reenlistment difficulties and shortages. Concerns about recruitment shortages have led some to call for a military draft. $($a$)$ What is the opportunity cost to a young person of service in the military? $($b$)$ In what sense a voluntary military force is the least costly way to form a military? $($c$)$ Can a military draft lower the cost of forming a military?