Eh, my rationale was the amount of time they've been out in the field, and the level of physical and emotional exhaustion they're feeling at this point. I couldn't imagine any of the mercenaries crying over the course of a regular battle, where they're all running the treadmill of charge-kill-die-respawn, but both of these men are running on fumes at this point. There's no hot shower, no hot meal and no bed for them to crawl back to at this point. Even if someone else walks back through the jungle in the dark and retrieves the one helicopter they've got left, they're still going to be languishing like this for the next few hours. So (at least by my reckoning), frustration and mental exhaustion would be pretty intense by this point.