After leaving the airspace of Skybreaker Peak, Thunderhawk City was advancing towards Tulip City War Zone, the most fiercely contested area. Based on the speed of Thunderhawk City, it would take at least a week to reach there.
During this process, Rocky certainly wasn't idle; he had too many things to prepare.
In today's world, the form of war had fundamentally changed, including supply and transportation.
In both the Sky Era and the Land Era, supply and transportation were crucial in warfare. So, don't think that just because the battles are centered around Sky Cities, supplies are no longer needed. That's far from the truth.
Even though today's wars revolve around Sky Cities, and while these cities are somewhat self-sufficient, they still need supplies in large-scale and especially long-term conflicts.
Supply of war resources.
Supply of food.
Even the supply of personnel.
