“Heroism can be defined as having four key features: (a) it must be engaged in voluntarily; (b) it must involve a risk or potential sacrifice, such as the threat of death, an immediate threat to physical integrity, a long-term threat to health, or the potential for serious degradation of one’s quality of life; (c) it must be conducted in service to one or more other people or the community as a whole; and(d) it must be without secondary, extrinsic gain anticipated at the time of the act. Heroism in service of a noble idea is usually not as dramatic as”