Roughly ten meters to its right, C6-9K spots what may provide a suitable distraction should the developing situation call for one. A public communications terminal is available, although it appears someone is making their way towards it.
Bast finds himself a favorable position among the rooftops overlooking the center of the city. He will easily be able to spot Ishala's approach as well as that of the two troopers marching a third prisoner towards their inevitable doom.
C6-9K calculates that if he hurries he may be able to beat the citizen that's moving towards the terminal so that a distraction can be rigged. Once there a computer or mechanics check (2P) will work to make it burn, smoke, whatever.