Richard Pilbery is a former paramedic and research fellow employed by Yorkshire Ambulance Service NHS Trust, and a former paramedic lecturer at Sheffield Hallam University. He is also co-author of First Responder Care Essentials, Ambulance Care Essentials, Ambulance Care Clinical Skills, and Casualty Care for Fire and Rescue.Kris Lethbridge MCPara is a Critical Care Paramedic working for Cornwall Air Ambulance and as a practitioner in the critical care unit at Royal Cornwall Hospital. He is also co-author of Ambulance Care Essentials, Ambulance Care Clinical Skills, First Responder Care Essentials, and Casualty Care for Fire and Rescue.