Every day, the two of them would join a crew — pickaxes and other heavy tools in hand — and clear trails of creeping brush, as well as remove heavy rocks and fallen trees.
On this second approach the F-8 pilot was observed to have his oxygen mask removed and was seen gesturing to the crew with hand signals in a pushing motion.
在其第二次接近时，歼8飞行员被看到摘下氧气面具，并被看到正在向机组人员作一个向前推进的手势信号。
3
But such an incident is rare, as it requires a poorly built or maintained diesel system on board, and a poorly trained and supervised engineering crew to allow something like this to get out of hand.