Conversation so far:
What year did Kevin Durant join?
2007.
What did he get?
Durant received an invitation to the United States national team training camp.
What happened to him this year?
he was cut from the team when its roster was trimmed to its twelve-player limit.
Who cut him?
Mike Krzyzewski.
What is his job title?
Coach.
What did he say to this?
the experience of the remaining players as the deciding factor.
When did he actually make the team?
Durant was finally selected to the national team at the 2010.

Question: What was this for?
Self-contained rewrite: What was the national team for?