On the upper deck of the next carriage there is a conductor's compartment. It's a small office containing a strongbox. Inside is a loaded handgun. Get to it. You are authorized to use whatever force necessary.

旁边车厢的二楼有一个乘务员室，里面有一个保险箱，箱内有一把上膛的手枪，找到它，必要时你可以使用任何武力。

《源代码》