. >> do you think his parkinson's is related to the tez he underwecht at edgewood? >> those substances affect the same region of the brain. tim clearly had adverse -- they gave him such high doses that he ranged from overdose with one substance to the an dote back and forth, and he actually had to get a very powerful antipsychotic drug because he flipped out. >> at what point does an 18-year-old kid think this is for life? what they are doing to me is going to affect my health for the rest of my life? >> things were different then. you believed in your government and wouldn't believe they would give you something to harm you intentionally. >> i tell you, we wanted to talk about the lawsuit with the v.a. and defense department. citing pending litigation, they declined to be interviewed on camera, but did offer this written statement instead. the department of defense said it has made it a priority to identify all service members exposed to chemical and biological substances. the v.a. says they have offered free medical evaluations to thousands of veterans. tim joseph