Per ESPN, a former Army officer is planning to separate from another, much less formal, branch of U.S. service. Mike Krzyzewski told ESPN’s Andy Katz that next year’s Summer Olympics in Rio de Janeiro, Brazil, will be his last as head coach of Team USA men’s basketball. The team is 75-1 under his guidance, including unbeaten runs to Olympic gold in 2008 and 2012, as well as a win in 2014’s FIBA World Cup. Prior to that last trophy, Krzyzewski brought his team to his alma mater, the U.S. Military Academy, for a daylong tour capped off by a nationally televised split-squad scrimmage. He…