What Happens to Your Body When the Alarm Goes Off
Every student knows the drill: walk single file out of the classroom, down the hall, out the nearest exit. Simple enough in practice. But Bolo Stick founder Bill Barna — a 33-year veteran police officer — has spent years explaining why the calm, orderly rehearsal bears almost no resemblance to what happens under actual threat conditions.
The difference comes down to physiology, and understanding it has direct implications for how schools choose their security tools.
The Sympathetic Nervous System Takes Over
Under normal conditions, the human heart pumps at 60 to 80 beats per minute. All body systems receive adequate oxygenated blood to perform their functions. Fine motor skills — tying shoes, manipulating keys, dialing a phone — operate without conscious effort.
Then the stressor arrives: the sound of a fire alarm, the smell of smoke, the identifiable crack of gunshots. In less than a second, the Sympathetic Nervous System (SNS) activates. This is not a voluntary response — it is an automatic reflex triggered by the perception of a threat.
According to research by Grossman and Siddle in the Encyclopedia of Violence, Peace and Conflict (Academic Press, 2000), the physiological cascade unfolds rapidly:
- Heart rate spikes to 200+ BPM as adrenaline floods the bloodstream
- Blood is redirected to large muscle groups — legs, arms, core — to enable survival-level strength and gross motor movement (running, throwing, striking)
- Blood is simultaneously pulled away from extremities in an attempt to reduce potential bleeding from wounds
- Fine motor skills deteriorate significantly: manipulating keys becomes difficult, sending a text message becomes nearly impossible, clear thinking is compromised
The SNS dominates all voluntary and involuntary systems until the perceived threat has been eliminated, escaped, or the parasympathetic nervous system activates to restore homeostasis. During that window, the body is operating on survival programming — not rational decision-making.
Why This Matters for Security Device Selection
This physiological reality has a direct bearing on which security tools are effective and which become liabilities under stress. Any device that requires fine motor manipulation — turning a key, entering a code, threading a bolt — introduces a failure point at exactly the moment when those skills are unavailable.
"The tactics in virtually every law enforcement agency within the United States switched to a Single Officer Response Technique (SORT) to prevent any delay."
Law enforcement understands this. Training programs are designed around gross motor movements — large, simple actions that remain functional even when adrenaline is at peak levels. The same principle should apply to classroom security hardware.
The Bolo Stick door barricade is a one-step operation: pull the steel pin from the holster and drop it into the floor bracket. No keys. No codes. No threading, turning, or manipulating small components. It is a gross motor action that can be completed in seconds by a teacher whose heart rate has tripled and whose hands may be shaking.
The Role of Repetition in Survival
Mandatory safety drills serve a critical purpose beyond familiarization with exit routes. They build procedural memory — the same type of learning that allows musicians to play complex pieces without conscious thought or athletes to execute plays under game pressure.
When an action has been rehearsed enough times, it becomes a procedural response rather than a cognitive task. Under extreme stress, cognitive processing is impaired, but procedural memory remains largely intact. This is why drill repetition matters: the goal is to make the safety response automatic, so that it executes even when the conscious mind is overwhelmed.
Schools that incorporate their door barricade devices into regular lockdown drills give teachers and students the benefit of that procedural learning. The action of deploying the Bolo Stick becomes as automatic as stepping out of the building during a fire drill — a rehearsed response that does not depend on calm, rational thought.
Passive Protection Reduces Active Stress
There is a secondary benefit to physical barricade devices that is often overlooked: they reduce the cognitive and emotional burden on the people sheltering behind them. Once a Bolo Stick is deployed and the door is secured with over 4,200 pounds of force resistance, the teacher's role shifts from active defense to passive waiting. That psychological shift — from "I must do something" to "I have done something and we are protected" — can be the difference between panic and composure in a room full of students.
Safety drills may cost valuable classroom time, but they ensure there are more days for everyone to enjoy. Explore Bolo Stick products here.