Describe the author’s second wound.

From the text:

"So when I got shot the second time, in the butt, along the Song Tra Bong, it took the son of a bitch almost ten minutes to work up the nerve to crawl over to me."

Later I found out I'd almost died of shock. Bobby Jorgenson didn't know about shock, or if he did, the fear made
him forget. To make it worse, he bungled the patch job, and a couple of weeks later my ass started to rot away. You could actually peel off chunks of skin with your fingernail. It was borderline gangrene.