Light Search and Rescue Operations: Size-Up, Marking, and START Triage

CERT light search and rescue is what trained community volunteers do in the first hours after a disaster: find trapped people, get them out if it can be done safely, and hand them off for medical care, all before professional teams can reach every site. The work is deliberately limited in scope. FEMA’s Community Emergency Response Team program exists so volunteers can handle initial life-safety operations while professional responders focus on more complex tasks.¹ Every technique below rests on one rule: a rescuer who becomes a casualty doubles the problem.

Gear Up Before You Do Anything

No entry, no lift, no search without full personal protective equipment. The CERT baseline is a hard hat, safety goggles, an N95 mask, leather work gloves, non-latex exam gloves for medical contact, a long-sleeved shirt, long pants, sturdy shoes or boots, and a reflective vest.²

Each item answers a specific threat. The hard hat is for falling debris during aftershocks or secondary collapse. Goggles keep dust and glass out of eyes when visibility is already poor. The N95 filters crushed concrete, insulation fibers, and smoke, but it will not protect against chemical fumes or oxygen-deficient air. Work gloves stop cuts from metal and glass; exam gloves go on when you touch a bleeding victim. Thick-soled boots reduce puncture wounds from nails and broken material underfoot.

Size Up the Building Before You Enter

Before entering any structure, the team assesses damage and decides whether volunteers should go in at all. CERT training uses three categories.

Light damage: broken windows, cracked plaster, minor damage to contents. Structurally sound, safe for volunteer entry.
Moderate damage: visible wall cracks, fallen decorative elements, significant interior damage, but the building is still on its foundation. Enter with caution.
Heavy damage: partial or total collapse, tilting, obvious structural instability, shifted off its foundation, heavy smoke or fire, gas leaks, hazardous materials, or rising water. Volunteers do not enter.

These categories come straight from the CERT Basic Training curriculum.² Conditions change. A building that read moderate on first approach can slide into heavy after an aftershock, a gas line rupture, or basement flooding. Reassess continuously, not just at the door. When in doubt, stay out.

Search Every Room Without Getting Lost

Once a building clears size-up, the team enters with a structured pattern. The standard approach is a wall-follow: every rescuer picks the right-hand or left-hand wall at the entry point and keeps contact with it throughout the search. In smoke, dust, or darkness where you cannot see your own hand, that wall is your map and your route back out.

Vocal calls are the main detection tool. Shout a standardized phrase, go silent, listen. When someone answers, move toward the sound while watching for new hazards like exposed wiring, gas odors, or weak flooring. Check every room thoroughly, including under furniture, inside closets, and behind doors. People shelter in small enclosed spaces during earthquakes and storms, so those are exactly the spots that hold victims.

In multi-story buildings, teams generally work top-down. Upper floors are more likely to be cut off, and victims there face greater risk from fire or collapse progression. Keep the egress path clear at all times. If the building shifts, groans, or shows any sign of structural change, retreat along the route you came in. Systematic beats fast: rushing through and missing a victim in a back closet defeats the whole operation.

Mark the Building So Other Teams Know

After searching a structure, rescuers leave standardized markings on the exterior. Duplicated searches waste time no one has in a mass-casualty event. A single diagonal slash near the entry point means a search is in progress and a team is inside. On exit, a second slash crosses the first into an “X,” meaning the search is complete and all team members are out.³

The four quadrants of the X each carry specific information:

Top: date and time the team exited and the search concluded.
Left: team identifier or agency call sign.
Right: hazards found inside, such as structural instability, gas leaks, or hazardous materials.
Bottom: number of victims found, broken down by alive and dead.

Incident commanders read these markings to track coverage and allocate resources.⁴ The team call sign and entry time also go next to the initial single slash, so if a team fails to come out, other responders know who is inside and for how long.³

When a Search Aborts or a Structure Is Off-Limits

Not every search finishes. If the team has to pull out because conditions inside are getting worse, draw a circle in the center of the initial single slash. That tells the next team the building was entered but not fully cleared. Separately, a large square box outlined in orange spray paint near the entrance marks a structure too dangerous for any search or rescue operation. Arrows can point toward the safe entry route if the marking sits away from the actual door.⁵

Triage Multiple Victims with START

When you find more than one victim, you need a fast way to decide who gets help first. The START system (Simple Triage and Rapid Treatment) uses three checks that together take about 30 seconds per person. The mnemonic is “RPM: 30-2-can do,” and it sorts victims by color-coded priority.⁶

First filter: anyone who can walk to a designated collection point on their own is tagged Minor (green) and skips the full assessment. For the rest, work through RPM in order:

Respiration: Breathing faster than 30 per minute means Immediate (red). Not breathing at all: open the airway. Breathing resumes, Immediate. Still no breathing, Dead (black).
Perfusion: Check for a radial pulse at the wrist. Absent or irregular pulse is Immediate (red). A radial pulse means blood pressure is adequate enough to reach the extremities.
Mental status: Give simple commands: “open your eyes,” “squeeze my hand.” Follows commands with adequate breathing and circulation: Delayed (yellow). Cannot respond or follow: Immediate (red).

The system exists to override the natural pull toward whoever is closest or screaming loudest. That impulse gets people killed when resources are scarce.

Control Utility Hazards Before They Kill Someone

Damaged utilities cause many of the deadliest secondary injuries in a disaster zone. CERT training covers when to shut off gas, electricity, and water, and just as important, when to leave them alone.

Natural Gas

Shut off the main gas valve only if you smell gas, hear it escaping, or see the meter dials moving with all appliances off. Use a non-sparking wrench and turn the valve a quarter turn. If the meter is inside the building and you suspect gas is already in the air, do not enter to shut it off. Evacuate and call 911. Once gas is shut off at the meter, only a licensed technician can restore it, because turning it back on without a professional safety inspection risks unseen leaks inside the walls that go undetected until ignition.²

Electricity

Electrical shutoff has a sequence: turn off individual circuit breakers or unscrew individual fuses first, then pull the main. When power is restored later, reverse the order. Never enter a flooded basement to reach a breaker panel, because standing water conducts electricity. Damaged or sparking wiring is a job for a licensed electrician or the utility, not a volunteer.²

Water

A broken water main inside a structure floods the floor, weakens it, and compounds any electrical hazard. The main water shutoff is usually near the meter or where the supply line enters the building. Shutting it off ranks below gas and electrical in priority. Never enter the basement of a burning structure to reach any utility shutoff.²

Lift Heavy Debris with Levers and Cribbing

Getting a victim out from under heavy debris is a mechanical problem, not a strength problem. Volunteers use a rigid bar (the lever), a pivot point (the fulcrum), and stacked lumber (cribbing) that locks in every inch of progress.

The lever can be a sturdy metal pipe, a dense wood beam, or any rigid object long enough to generate real mechanical advantage. The fulcrum sits on a stable, level surface. Move the fulcrum closer to the load and the lifting force at your end goes up while travel distance goes down; move it farther away and the reverse happens. Getting that balance right is the difference between a controlled lift and a lever that snaps or a fulcrum that sinks into soft ground.

Cribbing is dimensional lumber, typically two-by-fours or four-by-fours, stacked in alternating layers to form a box crib.⁷ Inspect every piece before use. Rot, cracks, or large knots kill load capacity, and a crib failure under load drops the debris back onto the victim.

Before physical movement begins, the team leader assigns roles: who works the lever, who places cribbing, who watches for load shifts. The plan names the “clean side” where the victim will be pulled free, and a safety officer watches the whole operation for signs of instability. Firm, level ground under the cribbing is essential; on soft ground, a base plate or wider lumber spreads the weight.

The lift itself follows one rule: lift an inch, crib an inch. The lever raises the load a small distance, a crib block slides in to hold that height, and the process repeats.⁸ If anything shifts, everything stops until stability comes back. For coordinated group lifts, the team leader controls pace with a call-and-response: “Ready to lift on the count of three: one, two, three, lift.” Lowering uses the same structure.² Synchronized cadence prevents one person from lifting while another is still positioning, which is how loads get dropped.

Move the Victim Only When You Should

Before choosing a carry, decide whether the victim should be moved at all. Moving someone with a spinal injury can cause permanent paralysis. Signs pointing to spinal involvement include severe neck or back pain, numbness or tingling in the limbs, loss of bladder or bowel control, a twisted or oddly positioned neck or body, and evidence of a head injury with altered consciousness.⁹ Unless the environment threatens immediate death, such as fire or imminent collapse, a victim with suspected spinal injury stays put until professionals arrive with proper immobilization equipment.

When a victim can and should be moved, the method depends on the victim’s condition, the number of rescuers, and the terrain.

Pack-strap carry (one rescuer, conscious victim): Drape the victim’s arms over your shoulders, cross their wrists against your chest, and lean slightly forward to shift the weight onto your hips. Works for longer distances when the victim can hold on but cannot walk.
Blanket drag (one rescuer, unconscious victim): Logroll the victim onto a blanket, head about two feet from one corner. Grip the blanket near the head and pull in a straight line, back straight, driving with your legs. This minimizes spinal movement compared with grabbing clothing or limbs.
Chair carry (two rescuers, stairs or narrow spaces): The victim sits in a sturdy household chair. One rescuer grips the chair back and tilts it onto the rear legs; the second faces inward and holds the front legs. Both lift with their legs. Lightweight folding chairs, resin patio furniture, and swivel chairs are not strong enough.

Body mechanics apply to every carry: bent knees, straight back, load close to the body. A back injury during extraction takes a rescuer out of the operation entirely, and in a mass-casualty event losing a trained volunteer has consequences well beyond that one lift.

Legal Protection When You Follow Your Training

Federal law provides real liability protection for volunteers acting within the scope of their training. The Volunteer Protection Act of 1997 shields volunteers of nonprofit organizations and governmental entities from personal liability for harm caused by their actions, provided they were acting within their assigned responsibilities, were properly trained or certified for the activity, and did not cause harm through gross negligence, willful misconduct, reckless behavior, or conscious indifference to the safety of the person harmed.¹⁰

The practical line: follow your CERT training and something still goes wrong, federal law generally protects you. Freelance beyond your training, take reckless shortcuts, or act while impaired, and the protection evaporates. The statute also carves out harm caused while operating motor vehicles, and it does not apply to crimes of violence, sexual offenses, hate crimes, or civil rights violations.¹⁰

State laws layer on top. Every state has a Good Samaritan statute providing additional immunity for people who render emergency aid in good faith and without compensation, though the specifics vary, and a handful of states impose a legal duty to act in certain emergencies. In every version, protection depends on staying within the bounds of your training. Volunteers who do have the strongest legal footing of almost any category of emergency responder in the country.

1
FEMA. Community Emergency Response Team (CERT)
2
Ready.gov. CERT Basic Training Participant Manual
3
National Voluntary Organizations Active in Disaster. SAR Marking a Building
4
FEMA. National Urban Search and Rescue Response System – Rescue Operations Guide
5
U.S. Fire Administration. Field Operations Guide (ICS 420-1)
6
National Center for Biotechnology Information. EMS Mass Casualty Triage
7
Rescue42. FEMA Cribbing
8
Firehouse. Lifting Heavy Loads – Part 4
9
Mayo Clinic. Spinal Injury – First Aid
10
Office of the Law Revision Counsel. 42 USC 14503 – Limitation on Liability for Volunteers