Well, anytime you can keep troops out of harm’s way, and create distance between troops and hazardous situations or materials.

任何时候，你都能让部队远离伤害，让部队与危险的情况或者材料保持距离。

“If you are able to help somebody on the ground, save a house, keep a firefighter out of a hazardous situation, that is rewarding, ”he said.

“如果你能帮助地面的人员，拯救一座房屋，让消防员脱离危险境地，那就是有意义的。”