Thousands of Americans don't have what's known as the "fight or flight" response, the heightened instinct your body gives you in times of stress.
The condition, called Addison's Disease, is an abnormality in which your body's adrenal gland doesn't work to its full capacity, and as a result, your body doesn't get that sense of urgency.
Now, the Knoxville Fire Department is making sure it knows what to do in case of an emergency by teaming up with a local family affected by it.
As part of the campaign, KFD is making sure all of its responders have the proper medication.
"This is a disease that they may encounter while they're responding to an accident or a trauma situation. That way, being aware of it, it helps them to better serve the patients," said Andy Adzima.
Addisonian crises can cause people with the disease to faint or go into a coma when put in a stressful situation. 140,000 Americans suffer from the disease.