Along route 139 north, about 30 minutes outside of Grand Junction, as the area became more sparse, I came across an ambulance, two chairs, and this frame for a instant canopy. The ambulance engine was running, but no crew was to be seen; a cell-phone charging cable led from a small window in the rear cabin to the cab. I assumed they were in the cabin to escape the heat. Further along the route other holding areas appeared with staged equipment but no people. I think it was toward the tail end of the fire-fighting effort.