Saturation patrol
A saturation patrol is a police or military patrol tactic wherein a large number of officers are concentrated into a small geographic area. Saturation patrols are used for hot-spot crime reduction, DUI checkpoints, and other location-specific patrols. The methodology employs overwhelming force presence, via large concentration of patrol officers, to create a real or perceived omnipresence, in the hopes that it deters crime inside and outside the actual patrol location.