AMLS! I was at the Lime Rock Park race in July. What an awesome time.
Its crazy how differing the garages are. Some guys have full snap-on setups, while others have a chinese made tool box with some craftsman tools jammed in it.
At one time or another, I've done it all. From running my own team and driving (long ago) to tire guy and mechanic, ... I currently work for the series itself.