Alarm Activation and Perimeter Decision
At 2:14 a.m. on a rainy Tuesday, dispatch sends you to a silent alarm at a closed pharmacy on Route 9. You arrive alone at 2:19. The rear door is ajar about six inches; the frame shows fresh pry marks. No vehicle is visible in the lot. At 2:11, a 911 hang-up came from a payphone two blocks east; the caller told dispatch a man in a dark hoodie was walking east. Backup is eight minutes out; a K-9 unit is twelve minutes out. The pharmacy's front windows are dark, and you hear no movement inside. A light inside the stockroom flickers on, then off. The nearest cross street is unlit, and you can see a figure in dark clothing about three blocks east, walking away. Your radio has a clear channel. Policy requires you to broadcast your status before entering a structure.
1. List the first five actions you would take, in order, and explain the risk each action reduces.
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A defensible order is: (1) broadcast your location, the open door, and that you are holding a perimeter rather than entering alone; this reduces the chance of an unreported solo entry and lets backup and K-9 plan. (2) Ask dispatch to confirm the 911 caller's location and keep the line open if possible; this tests whether the hang-up is related. (3) Check the front and visible windows from outside for movement or a second exit; this prevents walking past an occupant who leaves. (4) Set a containment point on the east side, where the pedestrian is walking, without abandoning the rear door; this preserves the scene and keeps the suspect from circling back. (5) Wait for backup before entering the stockroom, because the flickering light suggests possible occupancy and policy requires a status broadcast. Entering alone would trade a possible burglary arrest for an unnecessary safety risk.
2. May you stop the person three blocks east before backup arrives? Identify the facts that support or undercut reasonable suspicion.
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Yes, a brief investigative stop may be justified if you can articulate specific facts: the time, proximity to the pharmacy, fresh pry marks, the 911 hang-up describing a dark hoodie, and the direction of travel. Reasonable suspicion is a low bar but not a hunch. Facts that undercut it: dark hoodies are common, three blocks is not immediate proximity, the caller did not say the person was armed or carrying property, and you have not seen a bulge or a matching gait. The stop should be limited to identification and a pat-down only if you have separate suspicion of a weapon. If the person keeps walking or refuses to stop, weigh the strength of the description against the risk of a bad stop; a bad stop can suppress evidence and damage community trust. The safest course may be to broadcast the description and let a unit closer to the person make the stop.
3. What information should you broadcast, and why does the order of that broadcast matter?
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Broadcast in this order: your location and that you are out at the rear door; the open door with fresh pry marks; the flickering stockroom light; the 911 hang-up and pedestrian description with direction; and your request for a containment plan. Order matters because units need the scene address and your status first to avoid a collision or cross-fire situation, then the tactical facts. Put the pedestrian description after the building status so responding units do not drive past the door to chase a possible witness. State what you do not know: no vehicle, no confirmed occupant, no weapon seen. That prevents other units from assuming a burglary-in-progress with an armed suspect.