[ This is on another level. Sam's helped on missions in the past where he could, usually got a little more caught up than he intended, but he still has a hard time following orders from those he doesn't completely trust. It'd been more about keeping his friends safe than about mission perimeters.

Sam opens their connection wider, pulling them closer together as he spills out warmth to try to chase away that chill. ]

There's a lot of stuff that's bigger than us. I've put my life and the lives of others on the line for what's right more times than I can count, and I'd do it again. [ More than on the line, really - it's not like he hasn't done whatever he needed to for the greater good before - but this is different. ] This ain't like that. It's always gonna be you, all right? Whatever the mission - you're always gonna be my priority.

[ The people Sam loves here - Bucky and Clint and Steve and Shiro, Damon and Misato and Shepard and Kavinsky, Katie and Nyx and Bellamy - they're the ones he's sworn to protect, and they'll always come first. Sam'll go along with any mission right up until it involves leaving them in danger. ]