Perhaps when Optimus was searching for other life forms to ask for directions (haha see dad joke from earlier no don't it's not very funny), he should have looked a little closer to the ground. Because he momentarily passes by June, only picking her up in his peripheral vision after.

With a slow head turn, he takes upon her, eyes slightly widening in both...surprise and awe.

Because that's a human. On what's clearly Cybertron.

"Uh."

Great first impression, Optimus. Not only is your cover instantly blown, but you could have been a little more eloquent. You certainly do any other time of the week.

"I'm sorry. I didn't see you as I was passing. Are you in need of assistance?"

Also, air?