The scouts would have the first sight of the visitor as they took up positions on highpoints within the city in pairs and in as covert a way as possible. From there they could serve as both reconnaissance and surgical target elimination. Word of the visitor had spread through the ranks like wildfire on the short-comm.
"I have sight of him," one scout said to the next, having located the guest within his scope. "About 820 yards on your 1." As Dark Angels, Inquisitors were something occasionally talked about, but never realized.
"I see him... Looks like he's from Xenos, from the iconography and his retainers. I don't see what he would want from us, unless he needs some greenskins to play with."