"Vice-Boss, what happened?" the two soldiers approached the Satella dressed in something they've never seen before. But as they came closer, the zombies started to get more aggressive and ran past her.
The zombie's target wasn't Satella, but the two soldiers with a human's smell.
But it was quickly perceived by the soldiers that the prototype exoskeleton might be the case. Since it was assembled in a hurry using recycled parts from here and there, each prototype looked slightly different. Some of them were a tad heavier due to the lack of time to purposely remake the parts.
He could print the parts out, but since all machines were operating from day to night, there's no time for them to wait for the printer to cool down before handling something else.
Instead, they use the time from cooling down and setting up before it was ready to continue printing.