Kai gets to go where many of us don't. Secretly he wants to start CTU and be Jack but until that happens, he still gets to see inside many of the places you and I never will. Kai interviewed Johnny Walker who heads up the security force for Microsoft physical assets. You can download the interviews and listen on your Zune or iPod.
See http://blogs.technet.com/kaiaxford/archive/2007/12/06/technet-radio-physical-security-at-microsoft.aspx for more information.