Example: time-driven simulation of the line in front of a tellers' counter at a bank.

• Each minute there's a .9 probability that a new customer arrives
  • Add to the end of customer deque
• Each transaction takes from 2-8 minutes (random)
• Calculate the avg. time a customer stands in line
• Each minute, examine and update the status of every teller in the teller deque, working off the front of the customer deque