Most of the time, the equipment used by the FBI isn't particularly advanced—even the CIA is somewhat better.
But this signal van is truly advanced, comparable to the reconnaissance standards of something like the EP-3.
Considering the missing Huaxia artifacts from a private museum, McWhite had reason to believe that among Sofia's associates, there might very well be a Huaxia Citizen, and once this signal van fell into their hands, it would practically spell disaster.
So all night, he was tracking Sofia's whereabouts.
Unfortunately, Sofia's relationship with the Jansen Family is really not harmonious. Old Jansen was already snoring, ignoring these people, while other members of the Jansen Family said Sofia was just a child and would mature in time.
As for Sofia's whereabouts, everyone unanimously said: We really don't know.
