One big tragedy (смешанная)

“Well I’m saying you can’t die with the wrong dog tags on, so if we switched tags then neither of us would die.” The smile on Steve's face is intoxicating and Bucky can’t help but let his face spread into a grin as well.
“That's the stupidest thing I’ve ever heard”
“If you think it’s so stupid that give me your dog tags and we’ll see.”
Or
Back in world war 2 Bucky and Steve switched their dog tags because you can’t die if you don’t have the right tags on.
They still end up as one big tragedy in end anyway