Summary: A single-vehicle accident occurred on I-5 in Snohomish County, Washington, where a car collided with a guard rail. Two male occupants exited the vehicle and were observed walking around the scene. Emergency responders, including Engine 15 and multiple BLS (Basic Life Support) units, arrived to manage the incident, block the carpool lane, and triage the individuals involved. Command was established as 'I-5 Command.' No serious injuries were reported, and the incident was eventually terminated with units returning to service.