Leader Karl Kellenberger Leader Karl Kellenberger

When They Go Quiet

But the nervous system underneath is different.

Addressing It (Without Changing the Rules)

You do not need to soften standards.

You do not need to alter rank structure.

You do not need to eliminate accountability.

You need clarity and consistency.


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Reflection, Student Karl Kellenberger Reflection, Student Karl Kellenberger

The Quiet Movements No One Talks About

You’re sitting in class.

Your leg won’t stop bouncing.

You twist your pen. Click it. Spin it. Tap it.
You rub your thumb against the seam of your glove.
You pace in the bay longer than necessary.
You chew the inside of your cheek during report.

And somewhere in the back of your mind, you think:

Why can’t I just sit still like everyone else?

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Leader Karl Kellenberger Leader Karl Kellenberger

Writing Evaluations for ADHD & Introverted Members

There’s a moment in every evaluation where the pen gets heavy.

You’re not just documenting performance.
You’re shaping someone’s internal narrative.

For many neurodivergent members — especially those with ADHD or strong introversion — evaluations don’t land neutrally.

They land personally.

Because underneath the uniform, many of them carry something you may not see:

Rejection Sensitive Dysphoria (RSD).

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Leader Karl Kellenberger Leader Karl Kellenberger

The Quiet Officer

Not every effective fire service officer leads with volume. Some lead with clarity, calm, and consistency.

The Quiet Officer explores how introverted firefighters navigate station dynamics, build trust without performance, and command scenes through preparation, presence, and quiet confidence—without becoming someone they’re not.

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Leader Karl Kellenberger Leader Karl Kellenberger

When Leadership Becomes Loud

When leadership becomes loud, ego often replaces awareness. This article explores how volume-driven station culture impacts neurodivergent and introverted firefighters, and why steady, psychologically safe leadership creates stronger crews, clearer thinking, and better outcomes when it matters most.

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Leader Karl Kellenberger Leader Karl Kellenberger

A Leader’s Guide to Supporting Neurodivergent Recruits

Neurodivergent recruits don’t need to be fixed—they need to be understood. This Leader’s Guide helps fire service officers recognize different cognitive processing styles, reduce unnecessary barriers, and build training environments where neurodivergent recruits can learn, adapt, and succeed without being forced to mask who they are.

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Leader, Responder Karl Kellenberger Leader, Responder Karl Kellenberger

What Not to Say

Well-intended words can unintentionally dismiss, overwhelm, or isolate neurodivergent responders. This article explores common phrases that cause harm and explains how language can either erode trust or create psychological safety.

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