The Riverside Industrial Loop
At 02:10, Officer Reyes patrols the Riverside industrial loop alone; backup is eight minutes out. Over the past three shifts, dispatch has logged four calls in this six-block area: a broken window at a closed hardware store with nothing taken; a man testing door handles at a lighting warehouse who was gone on arrival; a tripped alarm at a self-storage lot with no entry found; and an abandoned shopping cart stacked with copper wire scraps beside a utility substation. Tonight Reyes sees a white panel van parked behind the hardware store, rear doors facing the building, no visible plates. The businesses are closed. A man walks from the van toward the store's side door carrying a duffel bag.
1. Identify the single most probable explanation that ties the four logged calls to tonight's observation, and name the two details that most strongly support it.
Read the worked answer
Most probable explanation: a burglary crew is doing pre-theft reconnaissance and staging in this block, targeting metal-bearing locations (hardware store, lighting warehouse, substation).
Why the calls are one pattern, not four nuisances:
- They cluster in the same six blocks within three shifts, which is above what random nuisance activity would produce.
- Each incident is consistent with probing rather than completed theft: nothing taken, no entry achieved, suspect gone on arrival.
- The copper wire cache is staging behavior, not litter.
Two most diagnostic details:
- The copper wire scraps by the substation - it shows a specific commodity is being gathered, which explains why a hardware store and lighting warehouse would be targeted.
- The plate-less van parked rear-doors-in to a closed business at 02:10 with a man carrying a duffel toward a side door - that is the loading posture of a theft in progress, not a customer.
Door-handle testing and the tripped alarm become supporting, not primary, evidence once the metal-staging inference is made.
2. Reyes must choose one: (a) approach and identify the man now, (b) broadcast and hold observation until backup arrives, or (c) drive past and clear the area so the man is not spooked. Choose one and justify it against the other two.
Read the worked answer
Choose (b): broadcast and hold observation.
- Against (a): Reyes is alone, backup is eight minutes away, weapons status is unknown, and the man is between the van and a door. A solo approach converts an observation into a possible fight and gives any second occupant of the van time to leave.
- Against (c): clearing the area abandons the best evidence opportunity of the week - a live suspect, a vehicle, and a duffel at a target location. A marked unit rolling past also risks spooking the man with nothing gained.
- For (b): observation preserves the option to intervene if someone inside is in danger, and it produces identification evidence (face, clothing, vehicle VIN, direction of travel) that survives even if the man flees.
What the broadcast should contain: location, vehicle description and plate status (none visible - ask for VIN check), suspect description, duffel, direction of travel, and a request for a second unit to cover the loop's far exit.
3. Name one fact that, if true, would most reduce the likelihood that a burglary is in progress, and explain why.
Read the worked answer
Best candidate: the man is the store's owner or an employee, the van is a documented work vehicle, and the duffel holds tools for an after-hours repair he was called out for.
Why this fact does the most work: it removes the staging inference, which is the load-bearing part of the case. The copper cache then reads as unrelated dumping, and the duffel becomes a tool bag rather than a collection container.
What it does not erase: the door-handle testing and the tripped alarm remain unexplained, so the officer should still verify identity and confirm with the owner of record rather than simply clearing. A weaker alternative - "the van belongs to a contractor" - reduces suspicion less, because contractors do not normally remove plates.