I never heard or felt the explosion. All I remember is that one minute I was sitting on the back of the dirt bike, holding fast to Rafael, and the next I was sailing horizontally through the air. I also remember hitting the ground and doing a perfect one-point landing on my chin. I bounced once, twice, and skidded to a stop, my leather jacket full of dirt. I lay there for a moment, winded, trying to figure out what had happened. Then my chest began to ache and my chin to throb. When I lifted my head, warm blood spilled down my throat from the cut that had torn my chin open.