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CLOUD WAYPOINT  /  SECOND READER AT THE EDGE  /  SCENARIO ROOM 01

Event C-UAS advisory over TAK — reachback lost

A mass-gathering event with DoD detect-and-advise support. TAK backhaul drops; the local Second Reader keeps scoring the shared picture and folds a critical advisory down to the operator. The jurisdiction lead decides.

T+00:00
GUIDE
Press Play to start the guided walkthrough. The narrator pauses the scenario at each key moment.

Presenter narration

Roles at the venue

DoD team: sensors, Second Reader node, detect & advise. 10 USC 130i has no special-event mission, so DoD's lane here is detection and information sharing in support of the lead agency.
Jurisdiction lead (FBI / DHS, or SAFER SKIES-certified local LE at the JOC): decides and acts under 6 USC 124n or the SLTT rule.
Operator in the field: reviews the advisory on a chest-mounted EUD, acknowledges and relays over mesh.
Second Reader: never changes a track's affiliation and never recommends a response. It scores the pattern, shows the evidence, and states what it doesn't know.

Map legend

Friendly units / sensor sites
Authorized UAS (Remote ID, waiver)
Unknown air track (affiliation unchanged)
Second Reader advisory hull
Rings: 1 km venue perimeter, 2 km. The stadium TFR (3 NM / 3,000 ft AGL) extends beyond view.
DOD-CUAS-2 · 00:00MESHTAK SRVSR
OverlayContactsAlertsSRTools
⚠ ADVISORY — OPERATOR ATTENTION+0.0 s
Suspected coordinated UAS group, inbound
P(coordinated) 0.00[0.00–0.00]
Tracks
ETA 1 km ring
Evidence
Freshness
Basis
Local only · profile v2026.11.03 · reachback lost
Not known: payload, intent, pilot location, whether any track is authorized by another agency.
Advisory only. The decision belongs to the jurisdiction lead at the JOC.

Second Reader · edge node MONITOR

Ruggedized edge kit at the DoD sensor site · ingests C-UAS sensor feeds and TAK CoT · deterministic scoring, every number linked to evidence
Current advisory
No active group
—

Observed (facts)

    Interpretation (model)

      Factor contributions (log-odds)
      Evidence freshness (s)
      Minimum advisory payload → mesh
      Records queued for reconciliation0
      Event log

      Research basis Open sources as of Nov 2026 · each line links to its source

      Authorities & roles

      • The FY26 NDAA (P.L. 119-60, Dec 2025) brought in SAFER SKIES: it widened 124n and set up a path for state and local C-UAS. The interim final rule took effect 1 Jul 2026 with a detection/warning tier and a mitigation tier. CRS
      • 130i covers specific DoD missions (nuclear, missile defense, NCR air defense, protective assistance, etc.), not special events. 10 USC 130i
      • At the World Cup, the FBI led C-UAS in 3 cities and DHS in 8. NORTHCOM synchronized DoD support and JIATF-401 coordinated it. CSIS
      • Officials cited a decision window of about 90 s. The scenario's critical advisory fires about 89 s out from the 1 km ring. CSIS

      TAK at the disconnected edge

      • Mesh SA (multicast 239.2.3.1:6969) keeps working without TAK Server. Missions, Data Sync and federation stop. AryaOS · TAK.gov
      • Federation is a live data flow, not replication: outage-window data is not backfilled. The edge node is the record of the outage. Sit(x)
      • Low-bandwidth mesh links (Meshtastic) carry about 5 CoT messages a minute, so the advisory must be a minimum payload, not a feed. atak-forwarder
      • C-UAS data already reaches TAK as CoT (DroneShield, Echodyne, Robin, Remote ID via DragonSync). Echodyne · DragonSync

      Scoring & human factors

      • Deterministic, auditable scoring sits on the critical path. An 8B LLM narrates after the scored advisory, never as its source. Published benchmarks suggest about 1.5–2 s on Thor and 4–6 s on Orin; not measured in this scenario. NVIDIA · FaithBench
      • Operators answered more than 90% of alarms when positive predictive value was 0.70 or higher, and far fewer below that. So this synthetic scenario sets its critical threshold at P ≥ 0.70; a real deployment would calibrate and test it per site before use. Wiczorek & Manzey
      • Calibrate per site (temperature scaling, ECE). Conformal sets support a principled "insufficient evidence" state. Guo et al. · Angelopoulos & Bates
      • Deduplicate CoT from many operators before counting it as independent evidence (covariance intersection). Treat Remote ID as spoofable. Sensors · D-Fend

      Where this fits

      • JIATF-401 chose Lattice as the common C-UAS C2 (Mar 2026). The Second Reader is designed as an advisory layer beside that C2, not a replacement for it. Defense One
      • Vendors classify inside their own stacks. In the vendor material reviewed (Nov 2026), we found no calibrated, evidence-linked probability published across vendors. DroneShield · Robin
      • World Cup 2026: 1,600+ detections, 700+ seizures. There is still no national system for sharing detection data across agencies. FAA · DefenseScoop
      • No documented coordinated swarm has hit a U.S. sports venue. The swarm here is a design stress case, and NORTHCOM calls domestic swarms a gap. Army Recognition
      ATC REPLAY · RUN SR-EVT-02-R1

      Scorecard against agreed gates

      GateThreshold (agreed pre-replay)This run (synthetic except operator response)Result
      Traceability: replay ID SR-EVT-02-R1 · build sr-edge 0.9.4 · profile v2026.11.03 · link script L2 (drop T+85 s, restore T+200 s) · clocks synced (PTP/GPS).
      SCENARIO ROOM 01 · GUIDED · ABOUT 7 MINUTES OF NARRATION

      Second Reader at the Edge.

      A narrator walks you through an event counter-UAS advisory when TAK reachback is lost. It plays on its own and pauses at the key moments. When the critical advisory appears, you'll be asked to act.

      Unclassified · synthetic scenario · narration is an AI-generated voice (OpenAI Cedar)