The TIGER Team are an asset tracking team. Last time I saw them they were in Iraq trying to account for all of the missing containers and equipment in them. They account for all equipment in theatre...I think.
A Tiger Team isn't just this asset tracking team. It is also a general term used for a variety of teams set up for a short term specific function, i.e. to move progress on an issue, frequently filling a gap where they may be no permanent team in place nor any plans to have a permanent team.