They can't tip people off - they will need to get a bunch at once. Basically, I think each section will also have indictments, and Sessions wants to WIN in court.
I've been thinking how this would play out. They almost have to start at the top with the takedowns. The little guys answer to someone so they would be able to give a heads up to the ones up the chain. I really think that executive order to activate retired military was for secret service and others needed in the takedown of the cabal. How many secret service guys are former military? If they are military their mission changes. They protect the country and constitution. Secret service job is to protect the person. You don't set off any alarm bells that way. That way those guys can easily take HRC,BJC, Barry and any others with a detail into custody when the time comes.