What precedes all dispatches of units in quarters?

• A. Alert 2
• B. Radio tone
• C. Dispatch prefix
• D. Alert 1

Answer: (D)

In this dispatch sequence, the first thing crews hear before anything else is the initial alert. This Alert 1 signal wakes units at quarters, prompts them to prepare, and sets the expectation that a call is incoming. Only after Alert 1 is issued do the actual dispatch details go out to the units with location, incident type, and assignments. Subsequent signals like Alert 2 would indicate escalation or additional units, but they don’t precede every dispatch—Alert 1 is the trigger that starts the response. The radio tone and the dispatch prefix serve separate roles: the tone may accompany the alert, and the prefix is part of the message header used for routing, not the pre-dispatch notification.