Recently,  I decided to watch an eyewitness account of 9/11.  When he discussed the aftermath,  he kept stressing how New Yorkers were treating each other.  He was expecting mass looting and opportunistic violence.  What he found was that people were going out of their way to take care of each other.  According to him,  people were stopping each other on the street to ask if they were okay.  He decided to give blood and was turned away,  the reason being that they already had a surplus.  It helped me remember reading that the Red Cross had to dispose of blood donations because they had such a surplus.  We can recover from something horrible if we work together.