The Siren and the Scientist

Captain Hermione "Wizard" Wilcox has a problem. The FBI has contracted Sirens, Inc. to extract a Dr. Martell from the Broken Pass Research Center before a wannabe paramilitary group abducts him for nefarious purposes. The problem is Hermione is the only one of the team who gets in when the Eagle Militia goes in guns blazing.

Then all hell breaks loose.

Dr. Chester "Venom" Martell spends his days developing anti-venoms that are cheap and plentiful to produce for the population at large. He's trying to save the world and gets to play with snakes and spiders to do it. When the Eagle Militia crashes the gates of the research center, shooting the guards, he figures the world is pretty much over.

Then she shows up to rescue him and his colleagues.

Turns out the Eagle Militia wants Chester to work on an antidote to their personal WMD, and they'll do anything, including kill other researchers, to get him to do it. But the only place to make an antidote is in the research center occupied by the militia. Wizard and Venom must return to make the antidote before the Eagle Militia catches them. This time they have a team, but it might not be enough to save the day.