Ultramarine Nob
At the top of the spire is an Ork Nob, heavily armoured and looking to be controlling the transmission equipment sending out the Ork signal that we are here to halt. We see him, he sees us. We fight.
In the skirmish, the Nob pulls out his rifle, aims, and presses a button on the side. A small rocket swings in to position and launches.
'The good news, Brother Democritus', says Lucian, 'is that you're in cover'.
'No, the good news it that he's shooting Brother Gadriel.'