The Central Wisconsin Airport in Mosinee is one of several that has already started screening bags.
Since Monday, December 30, 2002, screeners have been checking all luggage at CWA.
The new machines mean new rules for packing checked bags.
Some simple tips are to leave them unlocked, don't pack any food, because it might set off the machines, and don't pack any film because the new machines could ruin it.
