Eleven people on board a boat in the Mississippi River in Wisconsin were ejected when the boat’s engine exploded, injuring eight of them, according to the Wisconsin Department of Natural Resources. The explosion occurred Saturday in Pierce County when authorities say the boat’s operator attempted to start the engine twice and on the third try the engine exploded.

A perfect summer day to take a boat out on the water took a terrifying turn when a boat with 11 people on board exploded.