Santa Lucia K-9 Bottleneck
Venice is an island. This geographical reality creates an inescapable chokepoint for anyone entering by land. The Venezia Santa Lucia train station is the primary artery connecting the historic center to the mainland (Mestre).
Because there is no other pedestrian entry, the Guardia di Finanza (GdF) utilizes this funnel to their advantage. K-9 sniffer units are routinely deployed at the station exits, screening passengers stepping off high-speed trains (Frecciarossa) from Rome or Milan. Transporting supplies onto the island is extremely high-risk.