Liabilities, Independents, and Assets in High-Threat Response

You’re sitting down for lunch with your shift when the EAS siren activates for an explosion and ongoing shooting incident at a shopping mall just two miles from your station.

En route, you receive updates from law enforcement on scene reporting multiple shooters inside with wounded people everywhere. On final approach, as you identify a safe place to stage, you don your department-issued body armor, grab a loose-fitting helmet, and pull an active shooter bag filled with tourniquets and gauze.

Two additional police vehicles arrive next to you. Officers step out, grabbing plate carriers and rifles from their cruisers. They take one look at you and your partner and ask:

“Can you come with us?”

Understanding the LIA Principle

I was first introduced to the LIA principles while training with a colleague, Dom Raso, several years ago. After observing a wide range of tactical EMS structures across the country, it became clear that this framework provides a useful way to evaluate how responders contribute during major incidents.

At its core, the LIA model categorizes responders into three roles: Liabilities, Independents, and Assets.

Liabilities

Liabilities are individuals who require additional resources to ensure their safety. This includes members of the public who must be evacuated or protected during an active threat, but it can also apply to responders operating in environments where they cannot provide their own security.

In tactical EMS, the Rescue Task Force (RTF) model reflects this concept. EMS personnel entering a Hot Zone require law enforcement escort for protection, which allows them to access and treat casualties but also diverts law enforcement resources away from their primary objective: stopping the threat.

Independents

Independents are personnel capable of providing their own security and operating without dedicated protection in a Hot Zone.

While they may not be fully integrated into law enforcement tactics, they can maintain positions, protect areas of relative safety, and reduce the burden on police resources. This allows law enforcement to remain focused on neutralizing the threat.

In some jurisdictions, this model includes EMS providers authorized to carry firearms strictly for defensive purposes. These providers can operate more freely and contribute to incident management without requiring constant escort.

Assets

Assets are personnel who enhance the operational effectiveness of law enforcement or security forces. These individuals are trained to integrate fully into tactical operations and understand the roles, responsibilities, and movements of the team.

In some systems, this includes cross-trained providers who are sworn law enforcement officers and paramedics, sometimes referred to as “Triple Canopy” personnel. These teams can function as fully self-sustained elements capable of addressing both security and medical priorities simultaneously.

Other providers may fall within the Asset category by supporting operational tasks such as breaching, vehicle operations, rescue support, or extended incident management. These individuals act as force multipliers, increasing the overall capability of the response.

Risk and Reality

There is no debate that operating in a Hot Zone exposes EMS personnel to increased risk. For many providers, this level of exposure was not part of the role when they entered the profession.

However, as EMS continues to evolve, expectations are changing. Discussions around professionalization, compensation, and training standards are increasingly tied to expanded capabilities and responsibilities.

If EMS is expected to operate closer to the point of injury, then training, recruitment, and system design must reflect that reality.

A Team Standard

In special operations environments, every team member is expected to possess core competencies beyond their primary role. While individuals may specialize, redundancy ensures that the team can adapt when conditions change.

The same principle applies to EMS in high-threat environments. Providers who operate as Assets must be prepared to fill gaps, support the mission, and function as part of an integrated team.

Risk is inherent in that expectation, but so is capability.

The Question

Liabilities, Independents, and Assets all have a place within emergency response.

The question is not which model is correct.

The question is where you fit.