The nationalization of airport security in the US in 2001 has become increasingly controversial amid the
heavy-handed tactics of the TSA, but even as the agency is forever beating back such opposition, they are also
eagerly expanding into other venues.
Since a “Transportation” Security Authority can cover other modes of transportation, they have done so, with heavily armed TSA
agents showing up at train depots randomly as part of the “Visible Intermodal Prevention” (VIPR) squad that seemingly only exists to make travel less convenient.
But it doesn’t even need to be transport related these days, as VIPR squads show up virtually anywhere they feel like, nominally in the name of national security, hassling people trying to attend sporting events or concerts.