Steve rolled his eyes and glanced over his shoulder, expecting to see Bucky.
Bucky wasn't there. He stood at the bottom of the stairs, staring up at them with a stony expression on his face.
"Bucky?" Alarmed, Steve turned to go back down after his friend, but Tony grabbed his arm, halting him, and waved at Bucky with a cheerful grin.
"Hey! Manchurian Candidate! You coming or what?"
Bucky hesitated slightly, and then started slowly up the stairs.
"I got this, Cap," Tony said reassuringly. "Go say hey to Pep. Put your feet up." He pushed Steve inside the plane.