5:50 pm security Officer noticed black smoke coming down valley, went to check it out. Found 992G Loader on fire. 6:06 pm called person from Raven Crest. 6:08 pm called 911 at time of arrival on scene fire was coming out around both back tires and up over the top of them. Didn't see any one around, Security Officer went back and waited at post 4 on fire trucks.