Should cashiers/tellers/bank employees be trained to handle emergency situations such as robberies?

Definitley, the not only the cashiers or sales team but all the employees should have understanding to deal with the emergency situation of an organisation.

Yes! staff should be well trained for all possible environments/events as appropriate as their job role.

One cannot predict what will happen but having precautions can diffuse/prevent the situation.  

yes i think it is necessarily.

definitely yes..it is important for the safety..

Yes, they must be trained to handle the critical situations and it is important for employee as well as for employer.

Yes,they should be trained, atleast to a point. This is very important not just for the safety of the workers but also for the customers and the bank as a whole. The bank, on the other hand, should endeavor to include safety devices in their premises. This will make it easier for the banking staff to confidently operate in such a situation.

Training to handle emergency situations is a must, according to a training I have got in my job about ISO Certification and Integrated Management System, They seeking to sets out the criteria for a quality management system

i first information police 

At least, they should know where is emergency button :)

yes of course Emergency could be happen with anyone and anywhere if any one is exposed to hazards  at least they should be basic Emergency training for evacuation  and save there life.

yes of Course, Like knowing the secret Button to call the police, how to deal with a robber that holding  weapen and how to react