What does Ishmael and the others do in their spare time, when they're not on a mission?

Other than going out on missions, watching war movies, and doing drugs..... the boys don't do much of anything.

We were always either at the front lines, watching a war movie, or doing drugs. There was no time to be alone or to think. When we conversed with each other, we talked only about the war movies and how impressed we were with the way either the lieutenant, the corporal, or one of us had killed someone. It was as if nothing else existed outside our reality.