Bee Colonies and Scouts

Everyone in a Bee Colony has a specific job, which they are physically made for. When bees swarm they work together as a team and these little creatures can take down huge animals. How do they do it and who decides? Well the Scouts seem to be on the look out and when they see a threat they alert the hive to be on stand by or even attack.

Recently this point was brought up in an online think tank when a member asked;