Emergency circumstances

What do you think are 3 ways that emergency circumstances might require the setting aside of traditional ethics to manage the crisis or defeat an adversary?
In addition, provide your own perspective for each example you described, and justify or argue against the suspension of ethical considerations.
Biometrics is 1 form of technology being explored, and in some cases applied, for widespread purposes ranging from access control to a proposed mass use in national identification cards. Go online and briefly search for sources that tell you more about biometrics and the ways they are—or could be—used. Based on your research, answer these questions:
Describe in detail 1 way that biometrics are currently used.
Does this usage have a linkage to homeland security? If so, explain the connection; if not, could it have linkage?
Do you believe this current usage of biometrics is ethical? Why or why not?
Describe the fundamental concerns opponents of biometrics' use have regarding privacy. Do you find their concerns legitimate? Why or why not?
How are biometrics stored and maintained? Do you believe they are adequately secured? Why or why not?