The current US Men's national team consists of 12 players:
PG: Jason Kidd/Chris Paul/Deron Williams
SG: Kobe Bryant/Dwayne Wade/Michael Redd
SF: LeBron James/Tayshaun Prince
PF: Carmelo Anthony/Carlos Boozer
C: Dwight Howard/Chris Bosh
Kidd, Kobe, Wade, Redd, Prince, and Boozer will all be in their 30's and likely will pass on the Olympics (with the exception of Wade) to avoid the wear and tear. That's 6 players and at least one in every position except C.
The question is, who do you see playing for the United States when the London Olympics roll around? Remember to keep the roster at 12 men with 3 alternates.