When systems are targeted by cyber attacks, cyber first responders must be able to react effectively, especially when dealing with critical infrastructure assets. Training for cyber first responders is lacking and most exercise platforms are expensive, inaccessible and/or ineffective. This chapter describes a mobile training platform that incorporates a variety of programmable logic controllers in a single system that helps impart the unique skills required of industrial control system cyber first responders. The platform is modeled after a jail in the United States and was developed to maximize realism. Training scenarios are presented that cover specific cyber first responder skills and techniques. The results demonstrate that the platform is robust and highly effective for conducting sustained training exercises in curricula developed for cyber first responders.