This federal marshal thing has me scratching my head. I have never heard of federal marshals being brough in on a missing person case, or a domestic, local crime. That is not what they do. I know a retired federal marshal.
Here - this is from their website:
The U.S. Marshals Service is the nation’s oldest and most versatile federal law enforcement
agency. Federal Marshals have served the country since 1789, oftentimes in unseen but
critical ways. To this day, the Marshals occupy a uniquely central position in the federal justice
system.
It is the enforcement arm of the federal courts, and as such, it is involved in virtually
every federal law enforcement initiative.
Presidentially appointed U.S. Marshals direct the activities of 94 districts — one for each
federal judicial district. More than 3,320 Deputy Marshals and Criminal Investigators form the
backbone of the agency.
Among their many duties, they apprehend more than half of all
federal fugitives, protect the federal judiciary, operate the Witness Security Program, transport
federal prisoners and seize property acquired by criminals through illegal activities.
Here is their website:
http://www.usmarshals.gov/index.html
I found the above info on the tab "fact sheets". There is also a "sex offender" fact sheet.
Strange this "arm of LE" has been brought in on this case. Maybe because there are just so many RSO's around the area? I don't quite think that is the case. I just don't know.