system
Given the following post, respond as if you're commenting on Reddit:
human
[The Rock] Why did a civilian chemical weapons expert accompany the doomed Seal team during the raid on Alcatraz?

Surely the military has people who know how to dispose of chemical/biological weapons. Why not send one of them? Why did General Kramer tell FBI Director Womack to find his "best chemical/biological man?"
gpt
Chemical/biological weapons are extremely rare and the army concentrates its resources on the the most direct and applicable threats. Their research into chemical warfare extends to how they protect themselves. Any chemical weapons used on soldiers will be speeding towards them in rockets already. 

As was seen when weapons inspectors were sent into Iraq in the 1990s, the expertise lies in the civilian sector, scientists and people who devote their lives to understanding chemical and biological attacks and how to counter them. The FBI is more likely to be dealing with a chemical bomb, so it is more logical that they would have someone like Doctor Stanley Goodspeed on the payroll, who it should be noted had expertise across a wide field of topics. 

When the army needs someone that can get in and disarm  VX gas–armed M55 rockets, they turn to the FBI as they have someone like Stanley on the payroll, he's likely studied that exact weapon and he's the person with the best chance of getting the job done.