If the U.S. faced another attack like 9/11, how well would first responders be able to communicate?
Odds are, not very well.
A new report by Homeland Security recently looked at 75 U.S. cities and only six received top marks.
Making sure emergency workers like firefighters and police can communicate with each other has been a priority since September 11th.
Many firefighters died in the World Trade Center when they could not hear police warnings to leave.
Two cities with the worst communication grade were Chicago and Cleveland.