Jake was in the process of checking all the places he knew to look for Aaron. He'd asked JARVIS at the front door of Stark Tower, but no joy. Aaron's apartment was obviously empty when he called round. Mitchell's bar was next.
He let himself in, and looked around to see who was there, and sure enough, Aaron was there. Making his way round the tables, Jake went behind the bar and lifted a bottle of ...something, whatever, he wasn't fussed, and a glass. The bottle got held between his legs, the glass sitting upside down on top of it, and he wheeled his way over to Aaron's table.
His bottle (Vodka. Fair enough, really) was set on the table, and a stool was shoved out of the way so that there was enough room for his chair. He said nothing for the first few seconds, but he did pay close attention to how much his friend had already drunk. He poured himself a drink and pinned it, and then refilled his glass.