Lanterns and heaters are allowed on Forest Service lands if they are fueled by propane.提灯和取暖器若使用丙烷作为燃料,就可以在林务局所辖的林区里使用。There have been four accidents involving Forest Service planes.美国林务局已出了四次飞机事故了。The Forest Service and the timber industry were in cahoots.林务局和木材行业是一伙的。Forest Service crews often discover campfires that have not been put out completely.林务局员工常常发现未完全熄灭的篝火。