What was O'Brien's attitude in the chapter "Spin" in the novel "The Things They Carried"?

In the chapter "Spin," O'Brien bounces back and forth between lucid and disillusioned. His memories are jumbled and disconnected..... and through those memories, we, as readers, find ourselves a bit more understanding of the repercussions. O'Brien speaks to the boredom, the stress, and the fear. We see their humanity and their inhumanity...... all while trying to understand both.