The Communications Unit Leader (COML) Role for Small Departments

What the COML role actually is

The Communications Unit Leader is a defined position inside the incident command system used across public safety in the United States. Under the national incident management framework, an incident is organized into functional sections: operations, planning, logistics, and finance or administration. Communications lives inside the logistics section. When a communications unit is established, the person in charge of it is the COML.

Strip away the acronym and the job is simple to describe. The COML is the person responsible for making sure everyone on the incident can talk to the people they need to talk to. That means deciding which radio channels or talkgroups get assigned to which functions, writing that plan down so nobody has to guess, making sure the plan is shared, and fixing communication problems as they come up. The COML does not command the incident and does not direct tactics. The COML makes the tools of communication work so that the people directing tactics can do their jobs.

It helps to think of the COML as a support role, not a command role. The incident commander owns the strategy. The operations chief owns the tactics. The COML owns the plumbing that carries all of it. When the plumbing works, nobody notices. When it fails, everything slows down and safety suffers.

Why a growing incident needs a dedicated comms person

On a routine call, communications are not complicated. A couple of units, one channel, everyone hears everyone. The incident commander can keep the whole picture in their head. This is where most small departments spend most of their time, and it works fine.

The trouble starts when the incident grows. Consider what changes when a single-unit response becomes a multi-agency, multi-hour event:

• More units arrive, and a single channel becomes crowded to the point that urgent traffic gets stepped on.
• Mutual aid partners show up carrying different radios, programmed with different channel names, sometimes on entirely different systems.
• Different functions need to talk among themselves without clogging the main channel. Operations, water supply, staging, and medical each want their own space.
• Someone calls a mayday or an emergency traffic message, and it has to cut through everything else instantly.
• Radios fail, batteries die, coverage drops inside a large structure, and someone has to solve it while the incident keeps moving.

Now ask the incident commander to manage all of that while also managing the actual emergency. It does not work. The commander cannot be running strategy and simultaneously acting as a human channel director, tracking who is on what talkgroup and troubleshooting a partner agency's radio. That is the exact moment the communications function needs to be handed to someone else. The COML exists so that the incident commander can stop being the switchboard and go back to commanding.

How the role scales down for a small department

Here is the honest picture for a small volunteer or combination department. You are not going to keep a qualified COML sitting in the station waiting for a big incident. You may never have a formally certified one at all. That does not mean the function does not apply to you. It means the function usually starts as a hat the incident commander wears, and then gets handed off when the incident earns it.

On a small incident, the incident commander is the de facto communications manager by default. That is appropriate. The skill is recognizing the tipping point, the moment when the commander can no longer do both jobs well, and deliberately handing communications to another person. In a small department that other person might be an off-duty officer who responds, a chief from a mutual aid partner, a dispatcher pulled into a support role, or, on a large incident, a formally qualified COML requested through the regional or state system.

Scaling down does not mean skipping the function. It means right-sizing it. On a small structure fire, a single fireground channel and a clear order for emergency traffic may be the entire communications plan, and the commander holds it in their head. On a days-long incident, you request a trained communications specialist and stand up a real unit. The same role stretches across that whole range. What matters for a small department is knowing where you sit on that scale at any given moment, and knowing how to escalate before you are underwater.

What a COML does on a real incident

Whether the role is held by a fully certified specialist or an officer wearing the hat for an hour, the core tasks are the same. They are worth spelling out plainly because they are what any small-department leader should be able to perform in a basic form.

Build and communicate the incident communications plan. The central product of the role is the communications plan. In its simplest form this is a short document that says which channels or talkgroups are assigned to which functions: command, tactical operations, air-to-ground where relevant, staging, medical, and so on. In the incident command system this is captured on a standard incident radio communications plan form. On a small incident the plan might be three lines written on a command board. The point is that it is written down and shared, not held only in one person's memory.

Coordinate interoperability. When agencies that normally do not work together respond to the same incident, someone has to make sure they can actually talk. This might mean assigning a shared regional interoperability channel, patching two systems together where the equipment allows, or simply making sure a mutual aid crew knows which channel to select on their radio and confirming they can hear command. Interoperability is less about fancy technology and more about deliberate coordination before the confusion sets in.

Track resources and channels. The COML keeps an accounting of what communications resources are in play: which channels are assigned, which are still available, what portable radios and repeaters are working, and where the gaps are. On a big incident this is a real inventory. On a small one it is a mental note that the second channel is being held in reserve.

Solve radio problems. When a crew cannot be heard inside a building, when a repeater is out of range, when two units are talking over each other, when a partner agency's radios are on the wrong system, the COML is the person who diagnoses and fixes it. This is the most hands-on part of the job and the part where practical familiarity with your own equipment matters most.

• Assign channels to functions and write the plan down.
• Confirm every unit, including mutual aid, knows and can reach its assigned channel.
• Protect a path for emergency and mayday traffic.
• Keep a running picture of what is working and what is not.
• Escalate for more communications resources before the current setup is overwhelmed.

The technician role: COMT

Alongside the COML there is a related technician position, the Communications Technician, or COMT. The distinction is worth understanding because the two roles cover different ground.

The COML is the manager. The COML thinks about the plan, the assignments, the coordination, and the big picture of who needs to talk to whom. The COMT is the hands-on technical specialist who sets up and maintains the physical communications equipment: portable repeaters, gateways that link different systems, deployable communications packages, antennas, and power. On a large incident the COML directs the communications strategy and the COMT makes the hardware work in the field.

For a small department, the honest reality is that you will rarely field either role in its formal certified form. But the two-part structure is a useful mental model. There is the person deciding how communications should be organized, and there is the person making the equipment physically function. Even in a one-person version of the role, both jobs still have to happen. Understanding that split helps you recognize when you need to request outside help: a plan problem calls for management support, while a coverage or equipment problem may call for a technician and specialized gear you simply do not own.

How someone becomes trained and qualified

The path to becoming a qualified COML follows the standard position qualification approach used across the incident command system, and it generally has three parts.

Foundational incident command training. Before anyone takes on a support unit leader role, they are expected to have the baseline incident management courses that everyone in the system shares, covering the basics of the incident command system and the national management framework. These are the common entry-level courses most responders already complete early in their careers.

Position-specific training. There is dedicated coursework for the communications unit leader position that teaches the specifics: building a communications plan, understanding interoperability, working with different radio systems, and managing the unit. This is typically delivered as a formal course through a state training authority or a recognized training program.

Supervised experience and a qualification record. Classroom training alone does not make a qualified COML. The person is expected to perform the role under evaluation on actual incidents or realistic exercises, with their performance documented against a defined set of tasks in a position task book. When the task book is completed and signed off by qualified evaluators, and the sponsoring authority certifies the person, they hold the qualification. Qualifications are maintained over time through continued experience and refresher activity.

Because certification and sponsorship are handled through state and regional authorities rather than by individual departments, the specific mechanics vary from place to place. A small department that wants a member to pursue the qualification should contact its state training authority or regional interoperability coordinator to learn the exact local path. What stays constant everywhere is the pattern: baseline training, position training, then documented supervised performance leading to certification.

Why even a small department benefits

You might reasonably ask why any of this matters if your department will never staff a formal communications unit. The answer is that the function does not wait for you to be ready. Communications problems show up on incidents of every size, and the departments that handle them well are the ones where at least one person understands what good communications management looks like.

A member who understands the COML function brings value long before any large incident occurs. They can write a simple standing communications plan for your common incident types. They can make sure your radios are programmed sensibly and that everyone knows the channel names. They can teach the rest of the department the discipline of clear, plain-language radio traffic and protected emergency channels. When a mutual aid partner responds, they are the person who thinks about interoperability before the confusion starts rather than after.

And when the rare large incident does come, that person is the one who recognizes the tipping point, takes the communications hat off the incident commander, and either holds it competently or knows exactly how to request qualified help through the regional system. That recognition alone, the ability to see that communications has outgrown the command position and to act on it, is worth more than most small departments realize. It is the difference between an orderly handoff and a scene where nobody can hear the mayday.

Practical steps to build the capability

You do not need a big budget or a certified specialist to start. You need deliberate, small steps that build the function into your department's habits.

• Name a communications-minded member. Pick someone with an interest in radios and coordination and make the communications function their area to own and grow, even informally.
• Write a basic standing communications plan. For your common incident types, define which channel is command, which is tactical, and how emergency traffic is handled. Keep it short and put it where crews can see it.
• Learn your own radios cold. Make sure every member knows the channel names, how to switch channels, and how to reach a mutual aid channel. Confusion under stress usually traces back to unfamiliar equipment.
• Coordinate with your mutual aid partners in advance. Agree on shared interoperability channels and confirm that your radios can actually reach theirs before an incident forces the question.
• Practice the handoff. During drills, deliberately reach the point where the incident commander passes communications to another person. Make the handoff a normal, rehearsed move rather than an improvisation.
• Pursue formal training when you can. Contact your state training authority or regional interoperability coordinator about the foundational and position-specific courses, and send your communications-minded member down that path when the opportunity comes.
• Keep the records. Track who has completed which courses, who is working through a task book, and when refreshers are due, so a qualification does not quietly lapse.

None of these steps requires you to be a large department. They require intention. The COML function is not really about a certificate on the wall. It is about someone in your department understanding that on a growing incident, communications is a job of its own, and being ready to do that job at whatever scale the incident demands.