In fact, the sudden appearance of the other guy shocked Marco, enough that he fell off his seat on the plane's wing. He only just managed to catch himself and keep from landing on his butt. With his balance regained, Marco found himself staring at the newcomer, his mouth hanging open.
"I... wha... You're alive!" Marco managed to get out after a moment of staring. Except, that was all he managed to get out. He'd hoped to find people, he just didn't expect to be so surprised when he actually did.