From the DC website:
As expected, Chinese forward Yang Men has joined United in Florida. The 6'2" striker trained with the Black-and-Red last September, and he will battle alongside other players to make the final roster. Former University of Maryland forward Abe Thompson is no longer training with the team, and 21-year-old Colombian forward Yessy Mena has been invited into camp on trial.
So... no Abe Thompson. What the heck happened on day 1?
Also, would be cool if Yang Men turned into a target striker for the team.