TIOGA, N.D. (AP) — North Dakota’s resurgent oil industry on Wednesday held a celebration marking the state’s impressive 1 million barrels a day production level in the town where oil was first found in the state. World War II-era fighter planes swooped low above a grassy field in an airshow and guests chowed down on plates piled with barbequed pork, shrimp and baked beans and waited in line to collect commemorative medallions.

The state, the second-biggest oil producer in the U.S., passed 1 million barrels a day of production in April, but the announcement wasn’t made until June 17.