Helicopter-based emergency medical services (HEMS) offers critical care to patients in rural settings, or when ground ambulances or medical facilities are too far away, or the patient requires a more advanced level of specialty care. However, the ability to get patients to definitive care quickly comes at a risk. This topic covers medical helicopter crashes and the brave EMS providers, pilots and healthcare practitioners who serve their communities from above. (Photo/Oneida County Sheriff's Office via AP)