Some residents mistook the loud sound from the F-15 jets for an explosion, but the Broward Sheriff’s office confirmed that the noise was from a military exercise.
"The intent of military intercepts is to have the identified aircraft re-establish communications with local FAA air traffic controllers and instruct the pilot to follow air traffic controllers' instructions to land safely for follow-on action."
The Broward Sheriff’s office said 911 centers were flooded with phone calls about the incident.
The boom was felt and heard from Weston to Boca Raton, which is located about an hour north of Miami, the sheriff's office said.
Twitter users in multiple cities reported that they heard a loud explosion-like sound. Some users also said felt an impact that shook their windows.