The ambulance was alerted without a physician-staffed emergency medical service (EMS) unit with the mission statement “COPD—chronic complaints”. In an apartment smelling of cold smoke with wallpaper yellowed by cigarette smoke, a patient is found sitting on the sofa with increasing shortness of breath for 3 days due to known chronic obstructive pulmonary disease (COPD) under 2 liters of LTOT (Long-Term-O2-Therapy = home oxygen) over 24 hours.