I'd call back the phone number the call supposedly came from and see who answered. I would Google the business if it was a business and if they had a contact n

I'd call back the phone number the call supposedly came from and see who answered. I would Google the business if it was a business and if they had a contact number call that number as well. Go to the alleged scene and ask if anyone in neighboring businesses had herd gun shots. Even just from the perspective of the safety of the SWAT team it is colossally stupid to send them into a building based on a single source unverified tip like that without doing a cursory investigation of the circumstances first.