The first thing you should do when approaching an emergency scene is check the scene for safety. Before touching the victim, calling 911, or providing any care, you need to confirm that the area around you is not going to injure you as well. This principle is the foundation of every major first aid curriculum, including the American Red Cross “Check, Call, Care” framework.
Why Scene Safety Comes First
It sounds counterintuitive. Someone is hurt, possibly dying, and the correct first step is to pause and look around. But the reasoning is simple: if you rush into an unsafe scene and get injured yourself, you’ve doubled the number of victims and reduced the number of people who can help. Downed power lines, oncoming traffic, chemical spills, structural collapse, fire, and violent individuals are all hazards that can turn a rescuer into a patient in seconds.
Checking the scene means scanning for these dangers before you reach the person. It takes only a few seconds. You’re looking for anything that could have caused the emergency (which also tells you what might have happened to the victim) and anything that could still pose a threat to you or bystanders.
The Check, Call, Care Sequence
The American Red Cross teaches emergency response as three steps in a fixed order:
- Check: First, check the scene for safety. Then check the person to determine what’s wrong. Form an initial impression of the situation, obtain consent if the person is conscious, and put on protective equipment like gloves if available.
- Call: Call 911 (or have someone nearby do it) if the person is unresponsive, not breathing, gasping, or has life-threatening bleeding or another obviously critical condition.
- Care: Provide care based on what you find and the level of training you have. For someone unresponsive and not breathing, that means starting CPR and using an AED immediately.
The order matters. Checking the scene is always step one. Calling for help is always step two. Hands-on care is always step three.
What “Checking the Person” Looks Like
Once you’ve confirmed the scene is safe and reached the victim, your next job is figuring out how serious the situation is. Start by trying to get a response. Tap the person’s shoulder and ask loudly if they’re okay. Their response (or lack of one) determines almost everything you do next.
If the person is alert, talking, or moving, their airway is open and they’re breathing. You can take a moment to ask what happened, whether they have allergies or take medications, and what symptoms they’re experiencing. This is a focused check based on what you can see and what the person tells you.
If the person doesn’t respond, isn’t breathing, or is only gasping, the situation is immediately life-threatening. That’s when you call 911 (or tell a bystander to call) and begin CPR. The American Heart Association recommends starting with chest compressions for someone who appears lifeless and has no pulse, rather than checking the airway first. You have no more than 10 seconds to check for a pulse before deciding to start compressions.
Consent Before You Touch
Part of the initial check involves getting the person’s permission to help. If someone is conscious and aware, you need to identify yourself, explain what you want to do, and ask if it’s okay. People have the right to refuse care.
If someone is unconscious and can’t respond, the law provides what’s called implied consent. It assumes the person would agree to emergency care if they were able to. Implied consent also applies to minors when a parent or guardian isn’t present. This legal principle exists so bystanders aren’t paralyzed by uncertainty when someone clearly needs help.
Reading the Scene for Clues
Your scene check does double duty. Beyond identifying hazards, it gives you information about what happened. A crashed bicycle, a spilled bottle, a ladder on the ground, the smell of gas: these clues help you understand the mechanism of injury before the victim says a word. That context shapes how carefully you move someone, what injuries you suspect, and what you tell the 911 dispatcher.
If you arrive and see multiple people down, or the situation looks chaotic, relay that information when you call for help. Dispatchers use your description to decide what resources to send and how urgently. Research on emergency dispatch systems shows that clear information from the scene significantly improves the accuracy of the response, compared to dispatching based on the type of incident alone.
Gathering a Quick Medical History
If the person is conscious and the situation is not immediately life-threatening, you can gather useful information while waiting for emergency services. First responders are trained to use the SAMPLE framework as a mental checklist:
- Signs and symptoms: What are you seeing, and what is the person feeling?
- Allergies: Any known allergies, especially to medications?
- Medications: Are they currently taking anything?
- Past medical history: Any relevant conditions like diabetes, heart disease, or seizure disorders?
- Last meal or drink: When did they last eat or drink? (This matters if surgery becomes necessary.)
- Events: What was happening just before the emergency?
You don’t need to memorize this for an exam to make it useful. Even getting two or three of these answers and passing them along to paramedics can speed up treatment once they arrive.
Putting It All Together
The full sequence, from the moment you notice an emergency to the moment help arrives, follows a logical chain. You check the scene for dangers, then check the person for responsiveness and visible injuries. You call 911 if the situation is serious. You provide care within your ability: CPR for someone not breathing, direct pressure for severe bleeding, or simply keeping a conscious person calm and still until paramedics take over.
Every step flows from the one before it, and none of them work if you skip the first one. Checking the scene for safety is always the answer to “what do you do first?” because everything else depends on you being in a position to help.