Harry and Nikki are on a little date. While returning, they hear a helicopter overhead. It crashes into a former RAF airfield, into buildings holding refugees, ready to be returned to their countries. Harry manages to get to the pilot who insists it wasn't his fault. He is taken into custody. The remainder of the episode is a series of unofficial evidence gathering efforts. Since the whole thing is immediately explained as pilot error, Harry takes it upon himself to put down this finding (or non-finding). I'm sure we are going to get into some pretty political stuff in Episode 2 of the 11th season.