Transcript for Home for the Holidays Reunion with the Hartmanns
And next up, we told you about a special military family, the heartmans. They're in the studio. Before we talk to them, let's take a look at their story. Meet Julie Hartman, mother to four boys, two in service. She has one wish for Christmas, to have her band of brothers home in Connecticut. Especially at the holidays, that's the hardest. Reporter: Dominique and Zach are with her. But Nicolas and his wife cannot afford the trip from his California base. He's the one that's so family-oriented and so important for him to be all together. And the one person that can't be here is -- that's tough. Right. Reporter: In fact Nicolas hasn't been able to see his brother Michael in three years because of deployments. Michael forced to miss Nicolas' wedding last year. For the wedding, we thought he was going to be able to go. They changed the date four times. It was so perfect at one point where he was going to be deploying to Afghanistan, Michael, but he was going to be just in time to be nick's best man at the wedding. Reporter: But Michael's deployment date was moved up at the last minute, forcing him to leave the date of the wedding. Michael sending an emotional video toast in his absence. The army has seen fit for me to do the nation's business. Raise a glass to the happy couple, and best wishes on the special day. He surprised me on that one. It was pretty sad. Reporter: And now right after Christmas, Michael will be again deployed. This time to Germany. So by the time that they see each other again, it's going to be seven years. Reporter: Making this Christmas apart especially trying. During the holidays she calls me a thousand times. She has so much love for us. And us not being there are for the holidays is a heartbreaker for her. Reporter: Like so many military families, the families stays strong by focusing on the good times. Watching them walk away is the hardest damn thing you can ever do. But saying hello is probably the sweetest thing that anybody could ever imagine. I'm joined now by Julie and her two sons, army specialist Michael and Zachary. Welcome to "Good morning America." Thank you. Julie, I saw you crying already. It is a difficult time of year for a mom not to be with her whole family. It is. It's really hard. I'm so proud of them and honored for what they do. But it is hard. I miss them a lot. But more devastating for Michael and Zachary and Dominick, they're not going to see each other for a very long time. They're not going to see each other, but you can hear each other. We have Nicolas and his wife Victoria on the phone right now. Can you hear us, Nicolas. Hello, mom. Hi, sweetie. Can you hear us? Yes, ma'am, I can hear you. Terrific. Mom, what would you like to say to your son? I love you so much. I'm sorry you can't be home. T we're thinking of you and Tory. I hope you like the presents I sent you. Where did you send them? Can you hear us? Maybe I should just come in. Come on in. What? What? I hope you didn't send those presents too far, mom. Because here's your other boy. ? ? this is gonna be the best day of my life ? ? my life ? Oh, my god, thank you. Thank you. How does that feel to see three of your four boys? And you have another son who is at home in Connecticut with dad getting all the last minute prep. So you're going to have all four boys. Get over here. The first time -- All of your boys. Hi, great to see you, Nicolas. Great to see you. Come on over. Get close to mom, everybody. A mom needs her boys. Oh, you have no idea. I can't believe this. It's been so long. It's been so long. It's almost, what? Four years almost. And how is it for you, Nicolas, to feel your mom, to feel her love and to be with your other brothers also in the service? It's the most amazing thing. And I want to ask you, Michael. You did a very good job keeping this secret. You knew? Are you kidding me? Are you kidding? I got a -- yeah. Uh-oh. He's not in trouble. I can't believe it. It's the best Christmas present anyone can ever give me. Thank you so much, everyone. And we want to tell you, we have been honoring the military and the sacrifices they make. And we did need to get some helpers. So thank you. You too. Thank you. And I'm sorry, but you're -- I have such a big mouth. Your husband and your other son, they're too busy getting ready. So you're going to be with everybody on this Christmas. Let's cook lasagne. Merry Christmas. Thank you so much. And over to Paula. Where are you, Paula? Congratulations mom and all her boys. As a mom there's nothing more that you want than to have your family. Forget the prengts, it's about having everybody together.
This transcript has been automatically generated and may not be 100% accurate.