Dewayne Evans checks for leaks in the barrels of whiskey aging in a warehouse at the George Dickel Distillery near Tullahoma, Tenn., in this undated file photo. The Associated Press

In this undated photo, Gary Hinshaw tests the proof of the whiskey at the George Dickel Distillery near Tullahoma, Tenn. The Associated Press

Bottles of George Dickel Tennessee whiskey are displayed in a liquor store in Nashville, Tenn. Alcohol regulators ended their investigation into whether George Dickel, a subsidiary of liquor giant Diageo, violated state laws by storing whiskey in neighboring Kentucky.The Associated Press