From a site on the internet (sorry, forgot to write down which it was):
"Training for MOS 74D (Chemical Specialist) takes place at Ft Leonard Wood, MO, in the latest state-of-the-art chemical defense training facilities in the world. You will be trained to detect and identify chemical and biological agents and to conduct decontamination operations on personnel and equipment. You will also train in the use of battlefield smoke to obscure our forces against enemy detection and attack. You may train in CBRN reconnaissance using either the M93A1 FOX or the STRYKER recon vehicle. There is also training available on the biological integrated detection system (BIDS) that is used to detect biological agents. In addition, you may train to transport, escort, or destroy chemical agents safely and securely as a member of the Technical Escort Team. This training involves classroom instruction and hands-on experience to build confidence in yourself, your equipment, and other members of your team. After your initial entry training, you may be have an opportunity to attend airborne, air assault or ranger school based on you next assignment you'll work long hours in the field day or night in one the assignments below:
a. As a CBRN specialist or a decontamination specialist assigned to a non-chemical unit.
b. Or as a member of a decontamination, smoke, recon, or BIDS platoon.
Serving in this MOS can help you transition from the military to the civilian employment sector because your skills in leadership, teamwork and problem-solving are values in demand by civilian employers. And the training and experience you gain as a CBRN Specialist helps prepare you for jobs as an environmental specialist, as part of a civilian hazardous materials unit, or as a member of a rapid-response hazmat team.
You may also become part of a state or federal emergency management agency, or work as a member of a city fire department. "