A network of local monitors first captured a sign of ignition on the trail just after 12:12 a.m., according to the criminal complaint, and Rinderknecht called 911 just 30 seconds later. Out of cellphone service, he couldn’t connect, and so he tried a second time and a third time, walking back toward his car, and finally reached a dispatcher from the bottom of the trail — at which point the Los Angeles Fire Department was already on its way.