 Stage 2A: Stimulation procedures and standing and stepping assessments Following discharge or following closure of the incision testing andor training will be conducted 5 times per week for 160 sessions on an outpatient basis. In Stage 2 the individuals will be seen at Frazier Rehab Institute on a daily basis for testing and training. They might be asked to train twice a day stand and step on the same day with a 2-4 hour resting period in between. We will evaluate the combination of epidural stimulation with manual step locomotor training. This stage will be conducted over four months. During training, the patients will be provided with epidural stimulation using the parameters defined in Stage 1. The participants may be evaluated weekly for 1 FNPA; 2 NCS; 3 SEP; 4 SSR, 5 efferent motor activity during standing, 6 efferent motor activity during stepping and 7 reflexes during supine, prone, sitting and standing, as described above. Following the determination of optimal parameters for standing or voluntary activity, the participant might be given a Patient Programmer to translate weight bearing and stand training andor voluntary movement with stimulation to the home environment and perform additional training. The programmer will be optimally programmed by the research team in such a way to restrict configuration changes by research participant. A very specific protocol for stimulation and training will be given by the research team and the participant will be required to complete a training log. The research team will collect the home training log from the participant once a week and evaluate the need for changes to the home-based training protocol. 