Sgt Major, you sound just like a cynical old cop!
I generally don't give much weight to information given "...under the condition of anonymity", but it wouldn't be the first time a Federal Agent had a firearm "stolen". One report I heard yesterday, but not repeated anywhere, was that the gun was "...stolen from the agents car."
A few years back, several fully automatic weapons were taken from an FBI van, somewhere in Tennessee if I remember correctly.
The Sheriff of San Fran appears to me to be a total incompetent who has no business holding that office. A founder of the Green Party, he was a City Supervisor who reached his term limit and decided to run for Sheriff as a Democrat (loves those Political Office paychecks) and won against a career deputy who was well thought of by just about everyone in the Sheriff's Office. He was arrested on a Domestic Violence charge stemming from a New Years Eve argument with his wife. Lost his ability to carry (or possess) a firearm, suspended from office for a period of time by the mayor. Pulled some political strings to have the DV dropped to "Unlawful Imprisonment", and just had THAT conviction expunged.
San Francisco apparently got the Sheriff they deserved...:shock:
