Fire truck siren with a horn
Defibrillator, start up, beeps
Female flight attendant says via a PA speaker, "If you are seated at an emergency exit ..."
Morse code, emergency sos, twice
Turning on a emergency system with a beep
Hospital PA, young adult male announces, "Urgent. Security to ER."
Adult male police dispatch radio from car interior saying, "Adam 2 what's your 20?"
MALE FIRE RADIO DISPATCH: "RESCUE RETURN TO CENTRAL."
Male police dispatch, unfiltered, says, "10 10 negative"