The whipcrack of a bullet - the blunt slap akin to a hammerblow crashing against a gong, but with the reverberations of the metal drumskin deadened by an unseen hand in the darkness, echoes receding into the murk and white vapour of this enormous iron vent chamber. An ambush! But from where?
(QM: your scavenging has been interrupted... examine the battlemap
>>5707737 carefully! Sadly this rifle is not for you...)