Authorities arrested four people overnight Thursday during a sobriety checkpoint. Officers discovered three people were driving under the influence, and another person had drugs. Nearly 2000 vehicles passed through the checkpoint, and officials administered 155 breathalyzers.
Around 11:30 p.m., bright flood lights illuminate a stretch of Interstate in Sioux Falls. Hundreds of cars follow orange plastic cones and flashlights, and each car pairs with a law enforcement officer. Trooper Codie Schmeichel with the South Dakota Highway Patrol introduces himself to a driver.