Delivery of Emergency Services — Single Unit Operations

Comprehensive practice flashcards covering Chapter 11: Delivery of Emergency Services — Single Unit Operations, including NIMS-ICS principles, size-up procedures, risk management, incident command modes, perimeter control, and associated skill sheets.

According to Chapter 11, what five core areas must company officers be highly trained and knowledgeable in to function effectively?

Company officers must be highly trained and knowledgeable in: incident management, life safety, incident stabilization, property and environmental conservation, and postincident activities.

What scene conditions and problems can present major challenges to efficient incident management?

Challenges include wide- and diverse-area emergency scenes, civil unrest or hostile events, multiple casualties, unstable structures or vehicles, leaking hazardous materials (hazmat), debris strewn over a wide geographic area, witnesses and curious bystanders (spectators) milling about, victims mixed with bystanders, treatment needs of victims, and safety for those on-scene.

What purpose does a department tactical worksheet serve for a company officer during the initial response?

It serves as a checklist of tasks for the company officer to address, documents initial actions taken at an incident, and may serve as the incident action plan (IAP).

What federal directive mandates the use of the National Incident Management System (NIMS), and what are the common characteristics of NIMS-ICS?

Homeland Security Presidential Directive 5 requires the use of NIMS. Common characteristics include common terminology for functional structure, modular organization, common communications, unified command structure, IAP, manageable span of control, predesignated incident facilities, comprehensive resource management, and personnel accountability.

When is a unified command structure necessary, and what is a primary real-world example cited in the text?

Unified command is necessary when an incident involves or threatens to involve more than one jurisdiction or agency, or when multiple agencies are affected within a single jurisdiction (such as an active shooter incident with fire/EMS risks or an illegal meth lab). An example cited is the national response to the 2017 Hurricane Maria in Florida and Puerto Rico.

How do NFPA standards and Chief Lloyd Layman define an Incident Action Plan (IAP)?

NFPA 1020 (2025 Edition) requires the Fire Officer I to develop an initial IAP. Chief Lloyd Layman used the term 'plan of operation' in his 1953 book Fire Fighting Tactics. According to NFPA 1550 (2024 Edition), an IAP establishes overall strategic decisions and assigns tactical objectives for an incident during an operational period.

What are the recommended Rules of Engagement regarding fire service personnel questioning unsafe orders?

If personnel perceive orders to involve unsafe actions, they must question those orders immediately prior to initiating the action and share specific concerns. If an agreement cannot be reached based on safety risks, the order is not followed, the next supervisory level is notified, and alternative methods are considered. Any member of any rank may refuse an order that directly violates a safety SOP without disciplinary action.

What does Chief Lloyd Layman's RECEO-VS acronym stand for?

Rescue (exclusively life-safety priority), Exposures (limit emergency to property/area of origin), Confinement (prevent extension to uninvolved areas), Extinguishment (mitigating a fire), Overhaul (securing the scene from rekindle or other hazards), Ventilation (replacing contaminated/heated atmosphere with uncontaminated air), and Salvage (saving property and reducing further damage).

What four characteristics are commonly associated with an Incident Commander portraying an effective command presence?

1. Competence (ability to filter information through knowledge and maximize resource capabilities). 2. Calm under pressure (demeanor remains calm in stressful situations). 3. Composed (ability to inspire confidence through consistent words, tone, and inflection). 4. Decisive (ability to make timely decisions and take action).

What is Crew Resource Management (CRM), and what key indicator does it teach personnel to identify?

Originating in air transportation, CRM optimizes the utilization of all available resources, personnel, procedures, and equipment to promote safety and operational efficiency. It trains personnel to identify the first indicator of errors: the discrepancy between what is happening and what should be happening, and communicate it directly yet respectfully.

What are the three primary incident priorities present at all emergency incidents, and what is sometimes added as a fourth priority?

The three primary incident priorities are life safety, incident stabilization, and property/environmental conservation. Societal restoration is sometimes added as a fourth priority to ensure recovery is considered from the beginning.

What are the requirements of the '2-in/2-out rule procedure' under OSHA 29 CFR 1910.134(g)(4) and NFPA 1550?

When operating in an immediately dangerous to life and health (IDLH) atmosphere, personnel must enter in teams of at least two members ($2\text{-in}$), and at least two properly equipped standby members must be positioned outside the IDLH atmosphere to conduct emergency rescue ($2\text{-out}$).

Under OSHA 29 CFR 1910.134(g)(4), what two critical clarifications are provided in Notes 1 and 2 regarding standby personnel and rescue activities?

Note 1 states that one of the two exterior standby individuals may perform an additional role (such as IC or safety officer) as long as it does not jeopardize firefighter safety during rescue/assistance. Note 2 clarifies that nothing precludes firefighters from performing emergency rescue activities before an entire team has assembled.

What three core points characterize balanced risk management at a structure fire incident?

1. Responders will risk their own lives, if necessary, to save savable lives. 2. Responders will risk their lives a little, and in a calculated manner, to save savable property. 3. Responders will NOT risk their lives at all to save lives and property that have already been lost.

According to Marsar (2009), what are the temperature and time thresholds used in victim survivability profiling for structural fires?

The structural fire environment exceeds $500^\circ\text{F}$ ($260^\circ\text{C}$) within $3\text{ to }4\,\text{minutes}$, with potential for flashover within $5\,\text{minutes}$. The upper human survivability limit is $212^\circ\text{F}$ ($100^\circ\text{C}$).

What three critical questions must a company officer ask while conducting victim survivability profiling?

1. How long has the incident been ongoing and in progress? 2. Are victims suspected of being or known to be trapped? 3. Is it reasonable to assume that the victims are still alive?

How is incident size-up defined, and what is 'lead/reflex time'?

Size-up is the ongoing process of evaluating an emergency situation to determine what has happened, what is happening, what is likely to happen, what resources are available, what actions are necessary to effect control, and what additional resources will be needed. Lead/reflex time is the amount of time required to request and obtain additional resources.

According to Chief Lloyd Layman's Fire Fighting Tactics, what five considerations are needed for analyzing any emergency situation during size-up?

1. Facts (things that are true). 2. Probabilities (things that are likely to happen). 3. Own situation (officer's knowledge of unit capabilities and resources). 4. Decision (initial resource deployment and supplemental needs). 5. Plan of operation (information compiled into the IAP).

What target hazard information must company officers evaluate during preincident planning for grassland jurisdictions versus urban jurisdictions?

For grasslands: types of vegetation, how vegetation supports ignition and growth, weather patterns, and topography. For urban areas: building code classifications, types of building materials, general interior arrangements, fire behavior within structures, and occupancy classifications based on structure use.

What specific factors should company officers assess regarding response routes and weather while traveling to work and en route to calls?

Road maintenance, construction, detours, rain, snow, or ice affecting road safety, detours from parades or demonstrations, icy roofs/high winds affecting ventilation crews, wind/high temperature/low humidity increasing fire intensity, tide cycles in coastal areas, and temperature extremes affecting trapped victims and working personnel.

Based on the illustrated diagram, what are the six geometric sides that must be evaluated during a 360-degree incident size-up?

The six sides of the incident are Side A (Alpha), Side B (Bravo), Side C (Charlie), Side D (Delta), Top, and Bottom.

What components must be included in a standard initial radio arrival report for a fire incident?

Location confirmation, unit designation/on-scene status, building/area description (occupancy, size, height/stories), obvious conditions (nothing showing, smoke/fire showing, working fire, fully involved), initial actions taken (command establishment, water supply, line deployment), resource requests, strategy declaration (offensive or defensive), and identification of the initial rapid intervention crew (IRIC).

Why is the use of separate tactical and command radio channels critical during escalating incidents?

It avoids radio congestion and ineffective communication on scene, serving as a critical safety factor highlighted in multiple Line of Duty Death (LODD) reports, and allows dedicated channels for mutual aid, RIC, interoperability, and water supply operations.

What hazards make clandestine methamphetamine labs and chemical suicide calls particularly dangerous for responders?

Clandestine labs present extreme product toxicity requiring SCBA, the likelihood of booby traps, and the danger of armed/violent lab operators. Chemical suicide presents deliberate, lethal exposure to toxic gases in a confined space.

What are the three components of the 'Decision' phase in Chief Layman's ongoing size-up model?

1. Determining whether resources at the scene and en route are adequate for the situation. 2. Deciding how to deploy resources already at the scene in the most effective manner. 3. Deciding what to do with incoming resources (immediate deployment or staging).

Under what conditions is Investigative Mode utilized versus Fast Attack Mode?

Investigative Mode (Nothing Showing) is used when there are no visible indicators, prompting the first-arriving officer to investigate with portable radio command while other units stage. Fast Attack Mode (Working Command) is used when immediate action is required to stabilize the incident, save lives, or protect responder safety, and the officer directly accompanies the crew.

What is the maximum anticipated duration of a 'Fast Attack' mode in an IDLH atmosphere, and what are its three possible outcomes?

It should not last more than a few minutes within an IDLH atmosphere and results in: 1. The situation is stabilized. 2. The situation is not stabilized and the officer withdraws outside the IDLH to establish an exterior command post. 3. Command is formally transferred to another officer.

When an arriving officer implements the Command Mode, what three deployment options exist for the remaining unit members?

1. The balance of the company is placed in service as an independent unit (requiring at least two members, a unit chief, and a radio). 2. Members are placed under the supervision of another company officer. 3. Members are assigned to perform staff functions to assist Command.

What conditions justify establishing a defensive strategy at a structural fire?

A defensive strategy is justified by: limited resources (fire exceeds resources available to extinguish it), structural deterioration (unsafe for interior entry), risk outweighs benefit (risk to responders is greater than potential gain), or occupancy status (structure is known to be vacant or abandoned).

Why is building collapse observed to occur earlier in modern construction with large truss spans during fire conditions?

Modern construction and large truss spans (such as in churches, big box retail, and warehouses) are not designed to maintain structural integrity under fire conditions compared to older, more substantial buildings.

What is the distinction between strategic goals and tactical objectives?

Strategic goals are broad, general statements of desired incident outcomes applying to all emergencies (life safety, incident stabilization, property conservation). Tactical objectives are specific statements of measurable outcomes that lead directly to the completion of strategic goals.

Identify the three incident scene control zones depicted in the diagram and describe the primary function of each.

1. Hot Zone: The active problem-resolution area restricted to trained personnel wearing full PPE and logged in accountability. 2. Warm Zone: Immediately outside the hot zone for supporting personnel (e.g., decontamination, hydraulic tool power plants, lighting, fire protection backup). 3. Cold Zone: Area surrounding the warm zone containing the Incident Command Post, RIC, PIO, rehabilitation, and staging, bounded by the crowd-control line.

What protocols must responders follow when managing incident victims, bystanders, and friends or relatives of victims on scene?

Victims must be medically assessed before release (or sign a release-of-liability form if refusing care). Bystanders must be restricted outside cordoned boundaries. Friends and relatives must be gently but firmly kept in the cold zone with an assigned responder staying with them until victims are accounted for or removed.

What standard operational interval is mandated for conducting Personnel Accountability Reports (PARs), and what constitutes the sole exception to an incomplete PAR?

PARs must be conducted every $10\text{ to }20\,\text{minutes}$ in accordance with department SOPs. The calling of a MAYDAY constitutes the exception that interrupts an incomplete PAR.

When a MAYDAY is transmitted, what immediate actions must the Incident Commander take to control the scene?

The IC must immediately treat the MAYDAY as a new secondary incident, coordinate with dispatch to maintain dedicated radio channels, initiate a rapid intervention crew (RIC) deployment, request additional resources to handle the MAYDAY while maintaining control and strategy of the original incident, and prevent freelancing.

What actions should company officers take to deliver on-scene occupant services?

Provide medical evaluation and shelter from the elements, contact relief agencies, assist in notifying relatives, explain the operational reasons for forcible entry or ventilation, provide timely estimates regarding property reoccupation, safely escort owners through damaged areas when feasible, and maintain professional behavior.

How are Direct Evidence, Circumstantial Evidence, and Physical Evidence distinguished in fire investigation?

Direct Evidence is provided by a witness who obtained it through their senses. Circumstantial Evidence proves a factual matter through inference by proving other surrounding events or conditions. Physical Evidence consists of real, tangible objects directly related to the incident.

Define the terms 'Exigent Circumstances', 'Spoliation', and 'Transitional Attack'.

Exigent Circumstances is the right allowing fire personnel to enter property without a warrant to extinguish fires and remain for a reasonable time to investigate origin and cause. Spoliation is the destruction, damage, alteration, or failure to preserve evidence by someone responsible for it. Transitional Attack is an exterior attack directed through an opening to cool the fire compartment and transition it from ventilation-limited to fuel-limited before interior entry.

According to Skill Sheet 11-1, what are the sequential steps to develop and implement an initial action plan?

Step 1: Initiate ICS. Step 2: Evaluate preincident information. Step 3: Conduct a 360-degree incident size-up. Step 4: Analyze scene conditions for safety. Step 5: Evaluate implementation of local emergency/evacuation plans. Step 6: Determine priorities, strategic goals, and tactical objectives. Step 7: Communicate assignments to unit members. Step 8: Implement personnel accountability. Step 9: Allocate and deploy resources. Step 10: Complete documentation.

According to Skill Sheet 11-2, what are the steps for directing unit members to secure an incident scene?

Step 1: Initiate the Incident Command System (ICS). Step 2: Determine scene perimeter size based on incident priorities or investigator recommendations. Step 3: Direct unit members to secure perimeter using rope or barrier tape. Step 4: Ensure potential evidence is protected. Step 5: Notify law enforcement as needed. Step 6: Control access of unauthorized persons using law enforcement or directed unit members.

According to Skill Sheet 11-3, what are the three specific operational areas of focus when analyzing information for a postincident analysis?

The postincident analysis focuses on: (a) strategies and tactics, (b) personnel safety issues, and (c) lessons learned.