Sokka just wants to tell Aang it's all going to okay. He wants his Aang back. The smiling, laughing, irrepressible boy who he had grown to love like a brother. So he just squeezes Aang even tighter.

"I don't care. You--You're giving me a pretty good run for my money on the tear-squeezing front." He laughs, brushing at the tears that are pricking at corners of his eyes.

"We're gonna find you, Aang, I promise. We're gonna find you and kick the Nightmare King's butt and everything's gonna be okay. I know you've been fighting him for a long, long time but we're almost there, you just need to hold on a bit longer and we'll be there to help you, I promise. We aren't going to let you go this alone, we never did before and we won't now. You're our family and we don't let our family go without a fight. So hang in there, okay? Don't give an inch." He can't contain his emotions anymore and his tears are streaming freely down his cheeks as he keeps hugging Aang. He doesn't want to let go, even if this is a dream. He wants to take Aang back with him, back where it's (relatively) safe and he can see all of his friends again and be happy and not worry about saving the world, at least for a little while.

"We're coming. I promise. We won't let him take you without a fight."