I accidently sent a 911 message while traveling down the road in my pickup. Happened because I smashed the SPOT unit into a kleenex box on the dash to keep it from vibrating against the windshield. The Emergency Response people called my wife first - left a message as she didn't pick up. Then they called my daughter who was sitting next to me. We told them what happened and they called the 911 message. Less than 10 minutes. I was embarassed but relieved at the same time. It was good to know that the 911 service is real.