72C had been ordered to get to the Pioneer Squad as quick as possible, so Buttons decided that the quickest way would be the path the squad took earlier. It seemed to work, the tracks of the APC were easy to follow, and there were few enemies, just a bunch of corpses. Buttons looked around him, at the leftovers of his builder's past civilization. He saw some animals scavenging the wastes, but since he was a robot, the left him alone. For the most part.
In the middle of his path stood a lone animal that seemed to care that 72C was out in the wasteland. A bloatfly, attracted by the colors and sheen of his armor, flew towards Buttons. Buttons stopped in his tracks, startled by the insect, and scanned it. It definitely wasn't human, and wasn't comparable to a radscorpion or a deathclaw, so he was not sure what the strange creature was.
The bloatfly, noticing the change in movement, started shooting at Buttons. 72C, in his first combat experience with the new AI, panicked, and started firing wildly with his minigun. Buttons locked onto the bloatfly with the missile launcher, and fired a shot at the insect. It missed, flying off into the distance. And the bloatfly continued to attack him.
72C, wildly firing the minigun, managed to finally hit the bloatfly with a few 5mm rounds. The bloatfly popped, and flew backwards. Buttons, after recording the battle data, continued off to find the squad.