引用自 toddweist：

In the original black mesa and half life, the HECU and BO both are cleanup crews, and have orders to kill absolutely everyone and everything they see, with the exemption of high level members. However, when I place security, scientists and these HECU in a room, they simply walk around. In fact, if a scientist / security officer is wounded, an HECU marine will run over to them and give them a medkit. The same exact thing goes for BO.