“I was about to walk in to the Meijer on Main Street when I heard it. I turned around to look at the parking lot, to see if a car had back fired or something. But I didn’t see anything,” she said.
“There were several people standing outside the store that kept looking around to see if something had happened. We all asked each other what it was…but no one knew. I called my husband, who was at home, to see if he heard it and if he was okay. … He said he did hear it and thought it was a transformer that blew up.”
While no official cause of the boom has been determined, police said it could have been the sonic boom of a plane flying overhead.