. >> reporter: and if the process moves forward without that pre-condition, what are yop worried would>> that he would be forgotten, at --that's what he's going to do with or without certain accomplishments but our concern some for mark. >> reporter: we are talking about america's longest war. three presidents have tried to end this and president eump believedould be closer than ever to having some kind of a home.and getting u.s. troops are you worried that the commitment to that goal could mean mark gets left behind? >> very much so. yeah. very much so. i have a very fear, i think of every day, at i am going to wake up some morning and all this will be fine and clear and mark ist not home safely, and the peace deal has been signed and done -- a done deal, and mark's still out there. and what are we going to do en? >> reporter: we've seen president trump get very directly involved to try to gotiate prisoners' relse in the past with different countries. mark's case if heto do the same in this situation? than harm at this point.e hel he's shown he's a prettywe ul guy, he's gone toe to to