Running a Lifeline Sweep
Bottom Line Up Front
A lifeline sweep is a structured, household-by-household assessment of your neighborhood that produces a Community SITREP. It requires a trained team, a fixed question sequence, a recording method, and a pre-established reporting channel. A 10-household block can be fully swept in 30 to 45 minutes. The resulting report reaches the EOC within the hour. Done correctly, it is the single highest-value action your MAG takes in the first hours of any event.
This lesson teaches you exactly how to run one.
Pre-Event Setup: The Work That Makes Sweeps Fast
A sweep that works in the field was built before the field. There are four things your MAG needs in place before any event—if you are doing any of these for the first time after the disaster, you are already too late to do them well.
- Sweep area defined. Know exactly which households are in your sweep zone. Number them. Have a walk order that minimizes backtracking. Mark it on a hand-drawn map if necessary.
- Sweep form pre-printed. One row per household, eight lifeline columns, status codes (G/Y/R/?) and notes field for each. The companion guide includes a template. Print 20 copies and keep them in your go-bag.
- Vulnerable household list. This is the single most important piece of pre-event intelligence your MAG can hold. Who is oxygen-dependent? Who is on dialysis? Who lives alone and is over 75? Who has an infant? This list must be built with consent and held confidentially by the MAG Medical Lead. It cannot be built from memory at 3 AM when the power is out.
- Reporting channel confirmed. Know before the event which radio net, which CERT contact, or which communication method your sweep report will travel. Test it. A report that cannot be transmitted is wasted effort.
Connection to INT-04 Elicitation Tradecraft
The sweep question sequence below is structured elicitation. You are conducting a brief, welfare-focused conversation at each door to extract eight categories of information in under four minutes. INT-04 Elicitation Tradecraft covers the psychology of structured questioning, how to keep a subject at ease, and how to recognize when someone is minimizing their need (“We’re fine” while visibly distressed). A MAG whose sweep team has INT-04 background will collect more accurate data in less time than one that is making it up at the door.
The Sweep Team
A minimum sweep team is two people: one to do the door conversation, one to record and maintain situational awareness. For safety reasons, single-person sweeps are not recommended after events involving structural damage, unknown security conditions, or HAZMAT indicators.
Sweep team members carry:
- Sweep form clipboard (one row per household)
- GMRS or ham handheld radio, charged, on the MAG’s operating frequency — your pre-planned frequency should be recorded in your Family Emergency Plan Workbook; local area frequencies are available in the Area-Specific Assessment Report
- Pen and backup pen
- Flashlight (events often begin or worsen at night)
- N95 respirator (always on person; HAZMAT indicators can appear without warning)
- High-visibility vest or identifiable MAG marker (establishes role to neighbors)
- Small first-aid kit
MAG Roles During a Sweep
Sweep Team Lead
Conducts the door conversation. Follows the question sequence. Keeps the interaction calm, brief, and focused. Escalates urgent needs immediately by radio.
Sweep Recorder
Fills in the sweep form in real time. Notes address, residents, status per lifeline. Flags urgent items. Maintains the running log. Consolidates at end of sweep.
MAG Coordinator
Stays at a fixed base position. Receives real-time radio updates from the team. Monitors for incoming EOC or CERT traffic. Prepares the SITREP draft from incoming data.
Communications Lead
Monitors all active channels simultaneously. Transmits completed SITREP to RACES/ACS/CERT. Receives incoming EOC guidance. Logs all traffic with timestamp.
The Eight-Question Sequence
Every household receives the same eight questions, in the same order, every sweep cycle. The sequence is designed so that the most time-critical information (life safety, medical) comes first and lower-urgency items follow. The questions are in plain language deliberately—you are talking to neighbors, not filing a report at the door.
Door-Side Question Sequence (ask in this order)
- (Safety & Security / Health) Is everyone here okay? Anyone hurt? Anyone unaccounted for?
- (Shelter) Is your home safe to stay in tonight—no structural damage, no fire or flood risk inside?
- (Food / Hydration) Do you have food and drinkable water for the next 24 hours?
- (Health & Medical) Does anyone here depend on power for medical equipment, or have medications that need refrigeration? How much supply is left?
- (Energy) Power out? Do you have a generator? How much fuel?
- (Communications) Are your phones working? Do you have any way to reach 911 or listen to alerts?
- (Transportation) Is your vehicle operational? Have you driven anywhere since the event—what did you see on the roads?
- (HAZMAT / Water) Any gas smell, chemical smell, or sewage smell? Is your tap water working and at normal pressure?
Each household takes 90 seconds to 4 minutes depending on what is wrong. If something serious emerges—an injured resident, an oxygen crisis, structural collapse—the sweep team lead transmits immediately by radio without waiting to finish the form. The sweep continues after the urgent item is escalated.
Handling “We’re Fine”
Underreporting is a leading cause of preventable deaths in extended disasters. People say “we’re fine” because they do not want to be a burden, because they are in shock, because they trust that help is coming, or because they genuinely do not yet know what they need. The sweep team is not a poll—it is a welfare check. If the verbal report is “we’re fine” but the visual evidence says otherwise (someone visibly unsteady, a window boarded with a sheet, a generator running in an enclosed space), note both. Record what you see, not just what you hear.
Inside the EOC
Why the First Sweep Is the Most Important
The first Community SITREP that reaches the EOC for a given geographic area is the one that gets that area onto the board. Before your first report, your neighborhood is Grey—unknown status—on every lifeline. After your first report, the EOC can see it. The planning section starts tracking it. Resources start being considered for it.
In major events, EOC staffs are processing hundreds of reports simultaneously. The neighborhoods that are on the board first are the ones whose needs enter the prioritization queue first. The neighborhoods that stay Grey throughout the first day are the ones that consistently find themselves at the bottom of the pile when resources finally free up. The first sweep puts you on the map. Literally.
Sweep Cadence by Phase
-
Hours 0-12
Acute Phase — Every 2 hours
The situation changes rapidly. New needs appear, some resolve. Power may come back in some areas. Medical situations deteriorate. Full sweep every cycle. -
Hours 12-72
Stabilization Phase — Every 4-6 hours
Track new issues, escalations, and recoveries. Begin noting which households have resolved independently vs. which remain dependent on MAG support. -
Days 3-14
Extended Response — Once per day minimum
Track utility restorations by address, supply distribution locations and times, medical needs that are emerging rather than acute, mental health indicators. -
Week 2+
Early Recovery — 2-3x per week
Shift focus to recovery tracking: insurance contacts made, contractors vetted, debris removal scheduled, FEMA registration completed. Welfare checks continue but emphasis changes.
Post-Sweep Consolidation
When the sweep team returns from the block, the coordinator and communications lead consolidate the sweep forms into a single Community SITREP. The process:
- Assign a color code to each lifeline based on the aggregate of all household observations. If any household has a Red condition in a lifeline, that lifeline is Red for the block.
- Write one sentence of basis for each color assignment.
- Extract the priority needs (the specific, actionable, address-identified items that require outside resources) into the Priority Needs field.
- Set the next report time.
- Transmit via the pre-established reporting channel.
Total consolidation time for a well-practiced team with a 10-household block: 8–12 minutes. First SITREP transmitted within 45 minutes of the sweep start.
The MAG That Became a Militia
The sweep is a welfare check, not a security patrol. Keep it exactly that. You are knocking on doors as neighbors, not as authority figures. You are collecting information, not enforcing anything. The sweep team does not carry visible weapons during a welfare sweep. It does not exclude households based on anything except pre-agreed scope. If you encounter a household that is hostile to your presence, note their status as best you can from the threshold observation, mark the form, and move on. You are not the emergency manager. You are a neighbor with a clipboard.
The legal and community-relations consequences of a MAG that overreaches during a sweep can persist long after the event. The community consequence of a MAG that functions professionally is that you are welcomed back, trusted with more information, and better positioned to help in the next event.
Knowledge Check — Lesson 04
Check Your Understanding
Apply the sweep methodology to these scenarios.
1. Your sweep team reaches a household where the resident says “we’re fine, don’t worry about us.” But you can see through the doorway that the resident appears pale and unsteady, and there is a prescription oxygen bottle visible near a chair. What do you do?
2. Your MAG is 15 hours into an extended power outage. You have been sweeping every two hours. No new problems have appeared in the last two cycles. What should you do with the sweep cadence?
3. During consolidation, your sweep form shows: three households with no power (Energy Red), one household with a resident who has no medications (Health Red), two households with low food (Food Yellow), and the rest of the block appears generally stable. How should you assign the block-level color for Energy?
4. Which item should be prepared BEFORE a disaster event, not assembled during it?