Who's On First? Starfleet's First Officers

Red Alert!  Who's on first base?  20th century comic duo Abbott and Costello may have never warped on a Starfleet starship - although they did go to Mars - but their historically popular comedy bit, 'Who's On First?', evokes a responsible officer rank which doesn't always get deserved attention nor respect.

Check out my TrekNews article about those Number Ones of Star Trek.