It turns out that in hostile environments, insurgents often target explosives search dogs because the dogs are so effective and also so hard to replace. The team are trained how to combat this with advanced dog retreat under fire techniques. The dogs seem to enjoy it, but it isn’t long before oldest member of the team Alec is on his way to A&E. Head trainer Simon also discovers that some members of the team are in desperate need of polishing their search skills. He sets them an additional test before they are given permission to take part in the final assessment.