it tears you apart. >> reporter: even corps archaeologist sonny trimble struggled with p.t.s.d. >> you't realize that what the war has done is kind of whittled you away. it's kind of sanded you away like with fine sandpaper. and you can't do a lot of the things you could do in the past. i wouldn't come out of my house on the weekend for over a year. that's probably the first time i've said that to anybody besides my family. >> reporter: is it illegitimate, then, for employers to harbor some fear of worst-case scenarios like flashbacks or becoming violent, "going postal"? >> the military doesn't have a problem with us being postal, and we carry guns! >> as far as p.t.s.d. goes, are employers asking the same questions if someone is blind? you know, p.t.s.d.-- it's an illness, but it's manageable. >> reporter: the vets told us they're grateful for the program. >> i was pretty much feeling like i was going to hit rock bottom. and then this came along. >> i was on the verge of being homeless. me, my family were about to be out on the streets. once they hired me, i was able to, you know, wor