Not my usual thread to be snooping through, but I happened upon this while looking for Outer Banks frequencies.
In addition to Alpha, Bravo, Charlie, and Delta, two other response levels have been added in the past few years. Here they are, from least urgent to most urgent (from the National Academy of Emergency Dispatch's Medical Priority Dispatch System)
Omega- non-emergent, dffer to appropriate agency (person fallen but uninjured)
Alpha- BLS, non-emergency response (minor injury or illness)
Bravo- BLS emergency response (minor injury with potential to worsen)
Charlie- BLS emergency, ALS non-emergency (life-threatening potential)
Delta- BLS & ALS emergency (life-threatening)
Echo- BLS, ALS, nearest trained responder (FD, PD), all emergency (cardiac arrest, total airway obstruction, non-breathing)
BLS- Basic Life Support [first responder or EMT-Basic] - basic airway managment, CPR, oxygen administration, splinting, wound care, automatic external defibrillation
ALS- Advanced Life Support [EMT-Paramedic or pre-hospital registered nurse] - advanced airway maintainence (endotracheal intubation), cardiac monitoring, defibrillation, pacing, intraveneous therapy, drug administration