. >> reporter: warren lockette is in charge of tricare, the military's health insurance. tricare does not cover most cognitive care, calling it "not supported by reliable scientific evidence." >> there are pockets of techniques that have been demonstrated to be effective, but we really can't say cognitive rehabilitation therapy is effective when it stands alone. >> reporter: but advocates say that policy, along with poor screening procedures, leaves nearly 400,000 vets with limited options. the vast majority of them get no meaningful treatment. it's specialized care that's hard to find, harder to fund. but here at atlanta's sheppard center a few vets do get the help they need, a very lucky through. >> everyone that comes through here is better, tons better than when they show up. >> reporter: it's called the share initiative, a four-month regimen of physical and mental services, recreational therapy like horse riding, designed to relax the brain and ease anxiety. so far, sheppard's treated more than 200 soldiers. dr. darryl kaelin runs the program. any doubt in your mind