Never let the machine beat you...Found my old post. The blog is here
http://seanempey.blogspot.com/
I think old mattinuniform is a Maryland grad.
I don't think either of these will be overly enlightening. CBRN is a decent enough branch to go into. Not the most popular. Back in the day when the soviets were going to fight us on the plains of Europe and we expected to have to deal with nerve agents and tactical nukes the Chemo was an important dude. Even during Desert Storm I spent all 4+ days of the ground war in a chem suit taking little white pills that were supposed to minimize the effects of nerve agents. We thought Saddam was going to use that stuff. These days there really isn't a credible CBRN threat on the battlefields we are fighting on. Of course the homeland security guys with those skills that will get called if the terrorist ever turn that stuff lose in a major city will need the skills.
Your Boy is in for an interesting career.