Jimmy did not simply wait around for Zelna to return. He still had plenty of time on his hands, yes, but he wanted to use that time to prepare against the enemy early on.
After three 'air strikes' Zelna, Gaark, and the other QT riders assured Jimmy that they killed at least one-hundred enemies in total.
He was liking his odds now, because according to his calculations, or what the QT riders reported, there were just around four-hundred enemies remaining.
This was a good thing, and a bad thing at the same time.
They wiped out more than half of the incoming wave, yes, but for the sake of safety, he assumed that at least half of them remained, and that his people miscounted. After all, it was hard to make a solid estimation when hundreds of people were involved, and this was especially difficult in the dead of night when they could only count the enemy based on how many hand-held torches were lit.
