US could absorb a terror attack and bounce back: official

So....what EXACTLY are "acceptable losses" of US Citizens....Elderly? Regular folks....Children...?...
Who EXACTLY are acceptable losses.....?
Of COURSE Americans have the resolve to bounce back from just about anything.....but whose family exactly is acceptable losses....someone we wouldn't miss much....some folks we could just "absorb"......excuse me, my head just exploded again....

US could absorb a terror attack and bounce back: official:

A US security official on Wednesday said the country was capable of withstanding another terrorist attack and bouncing back, saying Americans needed to put extremist threats in 'perspective.'

Michael Leiter, head of the National Counterterrorism Center, said despite recent successes there was no guarantee that intelligence and law enforcement agencies could prevent every attempt by extremists to attack the United States."