User blog comment:FelixRodriguez/Scientist Rant/@comment-1973102-20101103221451/@comment-1973102-20101103232048

Because the hired mercs know nothing about the gass or whatever the hell they're doing. They'd need someone involved with the actual project, otherwise all Phenotrans would have there are people who have no idea what the hell they're doing.

Secondly: They established the POSSIBILITY of a third player. They still has no idea who it was at the time, and without Mark and Peirce, they never would have found out. Mostly because Mark and Peirce not only bring the only evidence against Phenotrans, but because they brought the only means on communication to the outside, seeing as everything else seemed to be jammed. (Tamara's phone, for example). Meaning that everyone (Save Sullivan, maybe) would have died by the firebombing.

Also, to add to my point: Mark and Peirce are apparently the ones who released the gass in the first place. Without them, the millitary WOULD have come and save the survivors, and TK would have been the one to take the blame for the outbreak, because they'd have no evidence against phenotrans, at all. Even if TK talked.