What connection does the author draw between physiological and psychological reactions to a life-threatening incident?

This fear can spread rapidly and is not limited to those experiencing the event directly—others that are affected include family members of victims and survivors, and people who are exposed through broadcast images. Psychological suffering is usually more prevalent than the physical injuries from a terrorism event. Understanding these psychological consequences is critical to the nation's efforts to develop intervention strategies at the pre-event, event, and post-event phases that will limit the adverse psychological effects of terrorism.

Explanation:

you need need more details so we can understand what your asking us.

the anecdote makes readers feel sorry for the man’s lack of heritage, then reminds readers that the man has an equally valuable heritage.