I flew on flight 474 from atl to lga(dep. 6:30 am), today, 1/02/06. I was seated in 2D. The flight was about 10 minutes late in boarding and as soon as they opened the boarding process (they let a family on first) they called group 1 to board, I was the third person (and noticed the first two). When I got to my seat 2C was already occupied and the man was already reading a paperback novel. He looked like (from descriptions in other spots on ft) what one would expect a sky marshall to look like; he was stocky, crew cut, though he was not wearing a suit. Is my guess correct?