Aang. Korra. He knows Aang can handle himself in a fight. Probably Korra too. Worst case scenario, Aang's Avatar State could wrap this up easily. But if that didn't work, they needed another way to fight. Korra was already charging into battle, which meant Pride was going to be busy.

"Aang, keep him busy! Korra, watch your back!"

And then just like that, Sokka ran away.