He didn't respond to that. What could he have said? That he couldn't promise that he was going to come out in one piece when he finally went off to take Lucifer down? That he felt like fixing the mess that he had started was going to be the last thing he ever did? No. Ruby wouldn't have it and she'd know it if he so much as tried smiling and lying straight through his teeth at her. It was better that he didn't say anything at all, so Sam simply tilted his chin up and looked off at the fireworks.
They reminded him of when he was younger. He'd drag Dean off while Dad was MIA, probably having been gone for weeks, and he'd watch Dean light up a bunch of fireworks in the middle of the night and they'd laugh and grin about it all like the stupid kids that they were.
It made them forget. For a little while.
He wished that they would make him forget now. It was hard not to when he was sitting there holding his daughter, thoughts of her having to grow up without him lurking at the back of his mind. "I know I can," Sam said, tearing his gaze away from the sky. He couldn't keep sulking. The fireworks were for them. He was making up for missing out on the party. No sulking. Sulking was no longer allowed. "Problem is, I'm too big and you're too small." He tried for a smile. "I might knock you over if I lean on you too much." Okay, that wasn't helping. It was phrased funny, but the meaning behind it was still...
He looked down at Emily. "I think she wants another firework."