Soft Target is the sixth episode of the second season. It was released on 4 November 2005.
When a death results from an anti-terrorism exercise Don and his team are called in, but they end up butting heads with the leader of the unit who refuses to halt further training exercises. Back at home, Alan has volunteered the house for the wedding of a girl both Charlie and Don had a crush on in high school.
In military terms, an easy kill, often a non-combatant or almost. The lack of defense implies a limited value to the enemy.