The Captain and Tennille

Captain is a title, an appellative for the commanding officer of a military unit; the commander or highest rank officer of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police department, election precinct, etc. In militaries, the captain is typically at the level of an officer commanding a company or battalion of infantry, a ship, or a battery of artillery, or another distinct unit. It can also be a rank of command in an air force. The term also may be used as an informal or honorary title for persons in similar commanding roles.

Biography summary from English Wikipedia, photograph via Wikimedia Commons.