Steve shook his head. "No. You... you shouldn't be alone."
Natasha and Sam appeared, one on either side of him. "She ain't alone, Cap," said Sam, gently taking one of his arms as Natasha took the other. "She got us here. All of us."
Friends on each side of him, Steve nodded. He leaned in and kissed the Doctor lightly on the forehead. "Thanks for everything, Doc." Then he let go, letting Sam and Nat pull him back the required few feet.