The sound of wand-fire as well as loud cracks in the air let Cissy know that a diversion was in play. What the devil is that loud sound? More people apparating in? She tossed the decoy detonator towards the aurors and tightly gripped the P-90 in her hands as she realized that the Agents were using muggle firearms as well. It was louder and faster than her own, telling her that they were using conventional ammunition. The shooting stopped, and the former Malfoy had to strain in order to hear the conversation after that.