I had been ATVing in the mountains all day and as I started in my home. My pager sounded a terrible accident in a very rural area at night. I usually use my Petzl Ultra and 3 back up battery packs,but I had grabbed the pack from my ATV. As more details came across the radio I became more concerned. The scene was one dead and two badly injured. My Myo light worked excellent we took turns with CPR using my light to see what we were doing until EMS arrived. I waved it for the rescue chopper to land and also helped State and local authorities reconstruct the scene. I was on scene for 8 long hours CERT team was hours away. I use this light for multi-purpose. I have used Petzl lights since 1994 and they all still work well. Great products!