911Sentinel

Office Towers

Class-A protection that never makes a scene.

Empty lobbies, plazas, and parking structures after hours — watched continuously and cleared quietly, because in a Class-A building a confrontation is its own liability.

The risk

What you’re up against.

After-hours lobbies, plazas, and garages sit empty for sixteen hours a day. Trespass and vandalism threaten occupancy — and a scene in your lobby damages the building's brand.

The coverage

What we put on your property.

  • Drone sweeps of the plaza, perimeter, and garage levels
  • A dedicated overnight responder for doors, stairwells, and garages
  • Calm, non-confrontational removal of unauthorized persons
  • After-hours lockdown checks against your lock schedule
  • Timestamped records for ownership review
Downtown / BelltownSouth Lake UnionBellevue
C1

Aerial drone patrol

Scheduled and event-driven autonomous aerial sweeps with thermal and optical imaging; every flight logged.

C2

On-foot responder patrol

Responders patrol on foot overnight — doors, docks, stairwells, and the places a camera cannot see.

C3

Trespass & loitering response

On-site response to unauthorized persons, documented from first contact to cleared area.

C4

After-hours lockdown checks

Scheduled checks of gates, entries, roof access, and dock doors against the lock schedule.

C5

Incident reporting & audit trail

Timestamped, exportable records of every detection, dispatch, and resolution — ready for ownership review.

A representative incident

Loitering, cleared through responder presence

An empty corporate plaza at night, wet pavement reflecting cool light.
Representative incident — illustrative scenario, not a named-client case study.Overnight sequence

Proof type: representative · Illustrative scenario.

Office tower · plaza level

Loitering, cleared through responder presence

An overnight sweep flags loitering at plaza level. The desk verifies the alert, a responder is dispatched, and the area is cleared without police involvement. The incident closes with a timestamped report.

  1. Stage 01DRONEThermal contact at plaza level
  2. Stage 02OPS DESKAlert verified — loitering, after hours
  3. Stage 03OPS DESKResponder dispatched to assess
  4. Stage 04RESPONDEROn-site presence and documentation
  5. Stage 05RESPONDERArea clear — subjects departed voluntarily
  6. Stage 06OPS DESKTimestamped report delivered

Area clear. No property damage; no police involvement required.

New coverage — intake open

Request a site assessment.

A Sentinel operations lead walks your property and returns a written coverage plan — sweep cadence, responder posts, and firm pricing — within two business days.

911 SENTINEL — PROTECTIVE OPERATIONS STANDARDOPERATING RECORD AVAILABLE ON REQUEST SEATTLE, WA