Sirius had been nearly ready to start casting hexes of his own until found James in the crowd of people - he was starting to think he really was going to have to tie him to the bed like Regulus had told him because it seemed like every time they went anywhere in public something like this happened. But then the Patronus came to him and it felt like he could breathe for the first time since this madness had started.
It was easier to find him after that, when he wasn't feeling nearly frantic with worry - an emotion he was getting to know all to well since having known James.
"Fuck, are you alright?" He asked when he found James hands on his shoulders. "You're not hurt are you?"