This second chapter is gripping, but the ending is a little bit lacking in intensity. Try making the end of the chapter more interesting or suspenseful if you can. Right now, it just sounds like an afterthought to the scene created throughout the rest of the chapter. About the sixth paragraph: since it's such a short paragraph, you should probably order the phrases a little differently. Right now you have this:[quote]I thought grimly, [i]So. Citywide blackout. No way in or out. Terrific.[/i][/quote]Since the protagonist's string of thoughts is sort of disconnected by the periods, you could increase that sense by changing it. Here's how I would format it:[quote][i]So, citywide blackout,[/i] I thought grimly. [i]No way in or out. Terrific.[/i][/quote]This makes the protagonist's thoughts seem less like four thrown-together ideas and keeps the reader going without stopping abruptly in the middle of reading them.