'Calling all cars,' e.g., 3 letters
A police car may get one: Abbr., 3 letters
Adam-12 call, briefly, 3 letters
Alert after a heist, maybe, 3 letters
Alert for a fleeing prisoner, in brief, 3 letters
Alert for the squad, for short, 3 letters
Alert of a sort, familiarly, 3 letters
Alert to a black-and-white, briefly, 3 letters
Alert to cruisers, briefly, 3 letters
Alert to cruisers: Abbr., 3 letters
Alert to squad cars, briefly, 3 letters
Alert to squad cars: Abbr., 3 letters
Arrest request, possibly, 3 letters
Bank robbery alert, say: Abbr., 3 letters
Be on the lookout for, briefly, 3 letters
Be on the lookout letters, 3 letters
Be on the lookout message, 3 letters
Be on the lookout msg., 3 letters
Black-and-white broadcast?, 3 letters
Black-and-white broadcast?: Abbr., 3 letters
Black-and-white flash?, 3 letters
Broadcast in a manhunt, in brief, 3 letters
Call from the dept., 3 letters
Calling all cars alert, 3 letters
Calling all cars announcement, 3 letters
Calling all cars letters, 3 letters
Calling all cars msg., 3 letters
Certain emergency call, briefly, 3 letters
Cop show alert: Abbr., 3 letters
Cop-show plot element, 3 letters
Criminals are amok!, 3 letters
Dispatcher's announcement: abbr., 3 letters
Emergency pol. message, 3 letters
Escapee alert, for ex., 3 letters
High-alert letters, to cops, 3 letters
Important call for the cops, 3 letters
It may start with Calling all cars, 3 letters
It's issued to several stations, briefly, 3 letters
Killer-on-the-loose alert, perhaps: Abbr., 3 letters
Law enforcement alert letters, 3 letters
Letters in a dragnet, 3 letters
Message from police HQ, 3 letters
Message to all police stas., 3 letters
Message to patrol cars, in a police procedural: abbr., 3 letters
Msg. sent to squad cars, 3 letters
Multi-precinct police alert, for short, 3 letters
NYPD Blues issuing order, 3 letters
One may be issued by the NYPD, 3 letters
Part of a police dragnet for short, 3 letters
Patrol car broadcast, 3 letters
Patrol car's message, for short, 3 letters
PD dispatcher's announcement, 3 letters
Perp pursuers' flash, 3 letters
Police alert, briefly, 3 letters
Police alert, familiarly, 3 letters
Police alert, for short, 3 letters
Police alert: Abbr., 3 letters
Police announcement: Abbr., 3 letters
Police broadcast, briefly, 3 letters
Police broadcast: Abbr., 3 letters
Police call for short, 3 letters
Police call letters, 3 letters
Police dept. broadcast, 3 letters
Police dept.'s Be on the lookout! alert, 3 letters
Police dispatch, for short, 3 letters
Police dispatcher's letters, 3 letters
Police HQ broadcast, 3 letters
Police manhunt call, abbrev., 3 letters
Police radio alert, briefly, 3 letters
Police radio alert, for short, 3 letters
Police radio broadcast, sometimes, 3 letters
Police radio letters, 3 letters
Police radio message: Abbr., 3 letters
Police radio report, 3 letters
Police radio report, for short, 3 letters
Police release for short, 3 letters
Police-alert letters, 3 letters
Possible start of a dragnet, in brief, 3 letters
R.C.M.P. radio alert letters, 3 letters
Radio broadcast: Abbr., 3 letters
RCMP alert, for short, 3 letters
Statewide call, maybe, 3 letters
Urgent call, briefly, 3 letters
Urgent transmission, for short, 3 letters
Wanted notice: Abbr., 3 letters
What a patrol car might get, for short, 3 letters
Where the answer to this clue is located...or is it?, 3 letters
Wide warning: Abbr., 3 letters
Wide-area alert, for short, 3 letters
Widespread LAPD alert, 3 letters
H.S. senior's course, 5 letters
High-level high school science class, briefly, 5 letters
Adam-12 broadcasts, briefly, 4 letters
Bank jobs may necessitate them, 4 letters
Be on the lookout messages, briefly, 4 letters
Black-and-white alerts, for short, 4 letters
Black-and-white broadcasts?, 4 letters
Broad-based broadcasts, briefly, 4 letters
Calls for squads, in short, 4 letters
Calls to everyone on the beat?: Abbr., 4 letters
Car alarms of a sort: abbr., 4 letters
Comprehensive alerts, briefly, 4 letters
Cop's calls, for short, 4 letters
Cruiser calls, for short, 4 letters
Dispatcher's broadcasts, 4 letters
Emer. broadcasts (and this puzzle's hidden theme), 4 letters
Getaway alerts, for short, 4 letters
Getaway stoppers, briefly, 4 letters
Lookout! calls, briefly, 4 letters
Manhunt broadcasts, for short, 4 letters
Manhunt initiators, briefly, 4 letters
N.Y.P.D. Blue alerts, 4 letters
Patrol-car alerts: Abbr., 4 letters
Police alerts (abbr.), 4 letters
Police alerts abbreviation, 4 letters
Police alerts briefly, 4 letters
Police alerts for short, 4 letters
Police dept. alerts, 4 letters
Police dept. notices, 4 letters
Police HQ broadcasts, 4 letters
Police radio messages, for short, 4 letters
Reports over the police radio, 4 letters
Some alerts, for short, 4 letters
Some LAPD broadcasts, 4 letters
Some messages from LAPD, 4 letters
Some radio dispatches, for short, 4 letters
Squad car alerts, briefly, 4 letters
Squad car alerts, for short, 4 letters
Squad cars get them, in brief, 4 letters
They may incl. makes and models, 4 letters
They may include ht., wt., skin color, etc., 4 letters
They might prevent getaways, briefly, 4 letters
They're heard in squad cars (abbr.), 4 letters
They're sent out from HQ, 4 letters
They're sent out to cruisers, 4 letters