During the fourth season of this program, Red Troop monitor a suspected weapons dealer who leads them into an armed stand-off and more.
With newly appointed Captain Fleming in place, Red Troop are dispatched to a former Soviet state in a race to save the kidnapped daughters of a British diplomat. As the rest of the troop track the armed rebels through dense forest, an injured Henno is left behind at base where he comes to suspect there is a mole amongst them...
Red Troop fly to Colombia to train a hapless contingent of local soldiers for an upcoming assault on a cocaine factory. Without warning, the mission is brought forward and Henno begins to suspect a hidden agenda. Will Red Troop be able to save this shambolic platoon from certain death?
Red Troop are drafted in with their American counterparts to apprehend an infamous Al-Qaeda terrorist in the White Mountains of Afghanistan. Tensions run high as the troops battle for control. Can they overcome their rivalry in time to stop the terrorist before he implements his co-ordinated attacks against the West? This episode features the Hunt for Hassan.
Red Troop monitor a suspected weapons dealer Stuart Dicken who leads them into an armed stand-off with an East End drugs gang. When the gang hijack a tour bus, Becca places herself in the line of fire. Can Red Troop stop the hijackers before Becca's true identity is revealed?
When a routine security check on a nuclear power plant goes disastrously wrong, Red Troop find themselves hunting the mercenaries responsible for stealing a can of glow in the dark Cobalt 90. As London is shut down, Red Troop race to stop the detonation of a dirty bomb and the certain devastation of the capital. The Troop then had to spend a large amount of time on the run