I get the distinct impression that half the people who applied to be FAMs were expecting to be involved in a heroic in-flight gun battle once a week, and were hoping to impress their mates with their new-found "frontline of airborne defence" status.
Reality is that virtually none of these people is ever going to come within sniffing distance of a hijacker, leaving them with the prospect of spending week after week, month after month, simply as an extra piece of cargo. I'd be bored rigid.