[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/04/23/art.abercrombie.obama.jpg caption="What are the three Abercrombie supporters doing behind Obama?"]
(CNN)– Barack Obama's concession speech Tuesday launched a primary night mystery that is still mystifying puzzled viewers: just who were those three guys in Abercrombie & Fitch T-shirts standing behind him as he spoke - and what, exactly, were they doing there?
The speculation began long before the Illinois senator's speech ended: were they plants? pranksters? or was the explanation really as simple as: just three guys who really like A&F T-shirts?
Be sure to tune in to the 6 p.m. hour of The Situation Room, when CNN's Jeannie Moos explores this controversy over casual wear.