Now, to the video of Bowe bergdahl's release. Experts carefully analyzing the tape, looking for clues of what the exchange may reveal about bergdahl and his captors. Martha Raddatz is joining us from... See More
Now, to the video of Bowe bergdahl's release. Experts carefully analyzing the tape, looking for clues of what the exchange may reveal about bergdahl and his captors. Martha Raddatz is joining us from Washington with the latest on all this. Good morning, Martha. Reporter: Good morning, robin. The video reveals fascinating detail between the prisoner swap. The relationship between bergdahl and his captors, and the security precautions taken to make sure it all went smoothly. With armed Taliban fighters perched on a hillside, bergdahl is dazed and motionless below. But take a closer look, in the back, blankets, which the former vice chairman of the joint chiefs of staff, may have been where bergdahl had been hidden for the ride. They could have been used to cover him up. He could have been bound. And you can see him blinking his eyes and clearing his eyes with his hands, that he was not used to the light. Didn't really know where he was. Reporter: At the helicopters approach, a Taliban fighter leans close to bergdahl. And in past, warns him, don't come back to Afghanistan, you will not make it out alive. But Steve ganyard sees more in that moment. It's not threatening. The Taliban pats him fairly gently. Like, you and I have been together for a long time. I don't want to kill you next time you're here. Reporter: The hood of the Taliban truck is raised, likely so the helicopter can spot the correct vehicles. And we see a 41 on the side of the helicopter, likely a signal to the Taliban. And that handoff, the American team approaches. We see the man in the center do a pat-down. What he's doing is looking for a suicide vest, something that would potentially make bergdahl a human bomb. Reporter: Watch how straight these men's arms stay. One even shaking hands with his left hand. Clearly holding on to something hidden. They've obviously got some kind of weapon, if they need to shoot across each other, they're ready to go in case there's an ambush. Reporter: A swift exchange with no one hurt. But back on capitol hill, they're still reeling. Would we release Khalid sheikh Mohammed to get him back? You have to look at the big picture here. Reporter: And we have learned that secretary of defense chuck Hagel will testify on the hill next week about the prisoner exchange, which is when bergdahl is now expected to be returning to the United States. But not to a celebration. Bergdahl's hometown of Haley, Idaho, has canceled a big welcome home celebration, due to security concerns. Robin? That's right. They cited security concerns as the reason why they were getting a lot of hate mail and things like that. And thought best not to do that. Thank you, Martha.
This transcript has been automatically generated and may not be 100% accurate.