correspondent, barbara starr. >> reporter: wolf, as you look at this extraordinary video, one of the questions swirling all day, bergdahl walked to the helicopter on his own. does that mean he is healthy? in contrast to the administration's position, it wanted to get him released because of his declining health. officials say, no, this video you see today does not tell the whole story. they say there are still two unreleased, classified videos, proof of life videos, that showed bergdahl to be in declining health. additionally, there was classified intelligence in last several weeks that also underscored his health situation. that intelligence briefed to defense secretary chuck hagel. we don't know the details, but officials insist that what they were so worried about was his health and his safety, concerns that the taliban were beginning to see him of less value to them because u.s. troops were getting out of afghanistan.