He is grateful for the time. Steve has grown accustomed to being alone. The fact that he could very well pick up his old ways here is hard to process. He got a taste of having a partner with Natasha and Sam, but it's not the same. It never can be.
Steve looks up with a surprised smile. It is a familiar scene, isn't it? Surveying the land and keeping records was one of his duties overseas if only because he never missed a thing. This is far more innocent; like the old days back in Brooklyn.
"I could be." He has no illusions about being the one to figure out an escape if this isn't a dream. That will be Tony's job. Perhaps the truth is he can't bring himself to go. While he needs time to adjust to the presence of Bucky, it doesn't change the fact he loves every second of this. It's as close to happy as he's come in a long time. "Keep it up, Barnes. I might even let you model for me." It will finally justify all that random posing he did on missions.