Heat, Lightning, and One Way Out

One decision-maker, named in advance, with published triggers. Ambiguity at 6:15 p.m. with 850 people on a golf course is the actual risk; the weather is only the occasion.

Triggers, written into the ops plan and agreed with the client and venue:

• Lightning within a defined radius (commonly 10 miles / 30 minutes since last strike) → shelter, no discussion. The tent is not shelter.
• Sustained wind at or above the tent manufacturer's rated limit, or any thunderstorm warning → sidewalls down or evacuate per the manufacturer's instructions and the fire marshal's permit conditions.
• Heat index at or above 103°F → shade, free water stations, cooling area, shortened program, medical presence increased, and a scripted PA advisory to guests.
• Any medical emergency in the heat → escalate, log, review.

Timeline: T-48 hours - go/no-go on the tent configuration and the shelter building; T-24 - confirm indoor shelter capacity for 850; T-4 - decision on program length and shade; T-2 - final call, communicated to vendors; on site - a named weather watcher checking every 15 minutes with a lightning app and a NOAA radio, reporting to the decision-maker.

Communication: scripted PA announcement written in advance, a staff text tree, and shuttle captains briefed so buses do not arrive into an evacuation.

Egress. 850 occupants through a single 10-ft pedestrian opening plus a service opening is not an acceptable egress plan, and the tent's permit almost certainly assumed more. Required egress capacity scales with occupant load, and the fire marshal - not the tent company - has the final word. Changes I would require before opening:

• At least two remote exits, counted in the occupant-load calculation, with the service opening converted to a staffed, unobstructed exit.
• Nothing placed in exit paths: no bars, no high-tops, no sponsor activations, no cable ramps in the path.
• Illuminated exit signage and battery backup lighting inside the tent.
• A staffed exit monitor at each opening with a radio, able to open sidewalls.
• Written confirmation from the fire marshal that the as-built layout is approved.

Medical. Two EMTs for 850 people over four hours, with a 103°F heat index and six bars, is thin. Add: a visible first-aid station with cooling (ice, cold water, shade), free water at every bar rather than a single station, at least two AEDs with locations known to every staff member and announced at the staff briefing, a dedicated radio channel for medical, an incident log, and a written route and rendezvous for EMS access on a golf course.

None of this is optional because the venue's plan was written for 300; a plan for 300 does not cover 850.

Treat it as a risk item with four gates, and be prepared to say no.

1. Airspace and permissions. Drone operation over crowds is restricted in most jurisdictions and typically requires the operator's certification and, for gatherings like this, specific authorization. Ask the operator for credentials and any required approval; do not accept "we do it all the time."
2. Venue and site. The golf course may be near approach paths, restricted land, or other events. Get the venue's written position; their insurer may prohibit it outright.
3. Insurance and liability. The operator's certificate of insurance must name my client as additional insured, with limits appropriate to an overhead hazard over 850 people. No certificate, no flight.
4. Privacy and guest experience. Guests filmed without notice, and a drone buzzing a reception, is a client-relations problem even when it is legal. Notice at registration, signage, and a no-fly window during the program.

Decision and record: if any gate fails, decline in writing, with the reason, and offer the sponsor the alternative (ground-level footage, a photographer, a branded photo moment). Log it in the risk register: date raised, decision, decision-maker, rationale.

Close the loop post-event: a short QA review against the risk register - what was triggered, what we did, what took too long, what to change in the template. The heat and the egress are the two entries that will recur on next year's outdoor events.