Surrounded
Nero had no doubt that after viewing him and the other teams work together, many others would copy them. But just having many people working together did not automatically make the situation better. In fact, considering that no one had any experience working in their own fireteam, working in a larger group could very easily result in mayhem.
It was why, instead of telling everyone that working together might cause them problems, Nero suggested that everyone practise their individual team formations and keep a small distance between the teams. This way, everyone could get some practice working on their own, but quickly receive help if they encountered trouble.
It was for that reason the five teams took up a large space as they moved from A-1 to B-5. The forest was not too dense with trees, though even so their canopy covered most of the sky, providing plenty of shade.