What is a sonic boom, and how does it happen?https://wpnnradio.com/wp-content/themes/movedo/images/empty/thumbnail.jpg150150adminadminhttps://secure.gravatar.com/avatar/790df65a416873c3f0501d984b0b24a2f32bf2af0d1509085b901ade4bbb36e7?s=96&d=mm&r=g
People in Washington, D.C., and Virginia were rattled Sunday by an explosive sound later confirmed to be a sonic boom caused by jets flying overhead. source
