uhhh wat you clearly weren't paying attention, I actually played that mission before the previous missions because friends, and still understood it. [spoiler]colonel bliss is the leader of the last man battalion, their motto being that they fight to the last man. LMB has essentially imposed a strict and harsh martial law on the territory it controls, but they are simply a private military corporation and have no official authority unlike the JTF. It tells you in the mission that he escaped by chopper, but when he learns you killed all his lieutenants he comes back to -blam!- shit up. The first wave division agent had nothing to do with killing him, we take down bliss's chopper in the aforementioned final fight. The first wave agent was simply working with them towards a common goal is all. His name was Aaron keener if you missed it.LMB+keener had a russian virologist captive, keener realises the LMB is -blam!-ed and is all like "-blam!- this shit I'm out" and takes the virologist, hence all the comments that he backstabbed them. The final echo you get access to as part of a side mission after that final story mission, also shows us the fate of the guy who made and released the virus, amherst, and indicates that keener now has all he needs to be able to make more of it, or even change it, and we don't yet fully know what he intends to do with it.[/spoiler]