Cass watched her dress, making sure she got the details right (she might be a half blood but he was the one who was muggle raised) before nodding at her. 'I've taken care of the air with the smoke,' he said. 'Just worry about the road. We'll make sure someone comes to relieve you eventually. I doubt we'll be finished here in a hurry.'
He turned back to the victim, before turning back. 'Oi, Tonks!' he called out, her old last name rolling off his tongue without him thinking. 'We haven't cleared the fuel truck idea with Percy yet, so try to be vague. Just say accident unless pressured,' he said, looking over the scene to try to see if there was something he'd missed. He couldn't think of anything. So the bodies then. They were finishing up with this one, and other Aurors had finished with two of the other girls.
At least soon they'd not need to hear the sound of their voices any more.