Thats pretty interesting. I wonder why there isnt a universal platform among the various agencies.According to Wikipedia:
"The newer SIG Sauer P229 in .357 SIG has been adopted for use by agents and officers of the following national and state law enforcement organizations (LEO): United States Secret Service. Federal Air Marshals. Bureau of Industry and Security."
For some reason I thought the dept of energy carried them as well, but I could be wrong.
Quite a few LE agencies carry the .357 Sig round, but I don't know which ones carry the P229.