Dunkin' is a global company, but in particular it is an icon of the American northeast, with over 1,000 locations in its home state of Massachusetts and over 1,400 in neighboring New York state.

Dunkin' stores in Omaha, Lincoln and Grand Island all had no doughnuts in their cases Thursday and Friday and put up signs on their doors and drive-thru kiosks informing customers that the pastries ...