Transcript for 2 Americans imprisoned in Russia get glimmer of hope from Geneva summit
President Biden said he spoke with Vladimir Putin about two Americans, who former Marines wrongfully imprisoned in Russia. Paul Whelan, 51, Trevor reed, 29. The president was a message to their families. And back home, one family was listening in Texas and Marcus Moore with their reaction tonight. Reporter: Tonight, the Texas parents of Trevor reed reacting to what they heard from president Biden following the summit. No promise Trevor is coming home, but they are grateful president Biden brought up their son with Vladimir Putin. It was great to hear those words. I think it's huge. I do, I really think it's huge. And then we have the last big final step for him to come home. Reporter: President Biden saying he raised the case of their son Trevor and Paul Whelan, both former Marines, both held in separate cases, trumped up charges in Russian jails. The family giving this audio of their son in prison. I've spent my whole life in the service of my country and I would appreciate it if my country would help to bring me home in this difficult situation back to my family. Reporter: President Biden said to the families watching back in the U.S., we're going to follow through with that discussion. I am not going to walk away on that issue. This is really what our whole goal in life has been for the past two years. It is surreal. But like I said, it's what we've been working towards for almost two years. So we're glad that it finally happened today. Marcus with us now. They say they're glad it's finally happening. We know Trevor reed's parents know it doesn't necessarily mean he's coming home, that by saying it's finally happening, just the discussion in this very public way that president Biden brought this up today with Vladimir Putin and tonight, they're telling you they're grateful. Are they in contact with the state department regularly on this? Reporter: David, it's encouraging for them and one of the things the state department told them, though, is not to get overly excited about the prospect of Trevor being released, that it will take some time. But the reeds tonight say they hope the momentum will continue so that their son and the other American, Paul Whelan, will get closer to being freed. David? We're so glad you got there reaction for us tonight. Marcus Moore in Texas, thank you.
This transcript has been automatically generated and may not be 100% accurate.