Parking the car, Joshua wondered if the wards here would even let him in. Maybe he'd been blackballed. Maybe he'd been branded an enemy. Maybe Pym would see him, think "Traitor! Spy!", and open fire.
Well, he thought. That's probably not too likely.
All of these thoughts were just excuses, really; he was afraid of what the Arrows were going to think and how he might be treated. But he had always been in a bit of arrested development. He had a lot of growing up to do, and this was part of it--own up to what you've done wrong, and take your medicine.
He climbs the stairs, passing through the wards (eyes half-shut in anticipation of a lightning bolt that didn't come), and enters the training grounds.
Now, the question was, who was going to be here?