The lurker

The sewer is like your go to place anymore. You decide to head down and as you are climb down the fire escape, you hear gunshots which was usual anymore. You keep on walking to the sewer and push off the sewer cover. You slide down and the nasty smell reaches you again, but you have started to get used to it. As you lurk in the sewer, you hear a thick spanish accent. "Get the bomb ready for the explosion, NOW!!!!!!!" You follow the sound and as you reach the doorway, you grab a rough rock out of your pocket and throw it at the power panel. The power shuts off. You then lurk in the room. As you head in the room you hear cursing and gunshots. What do you do now...