The Missoula Police Department and Montana Highway Patrol will conduct a "DUI Saturation Patrol" this weekend in an effort to "combat impaired driving." The patrols will begin early Friday night and run until Saturday morning "with special emphasis on bars and nightclubs in the Missoula area."
So, basically, they're preparing for Homecoming.
Expect to see additional officers in addition to the regular early and late night shifts. The release mentions no scheduled checkpoints.