Sam Wilson (Falcon's) Military Rank in The Winter Soldier

Are we told Sam Wilson's rank in Captain America: The Winter Soldier?

We're told he's a specially trained USAF Pararescue veteran - looking at the Wikipedia article on this organisation, most of the notable people it mentions (e.g. the medal winners etc.) seem to be sergeants. Does it seem reasonable to give him that rank if it isn't mentioned in the film? Do we ever see him in uniform?

Comics are unfortunately no help because he has a completely different background there.

Thanks!