Security forces' rigid adherence to protocol that traps and endangers the Doctor's companions rather than ensuring their safety

With security forces closing in and the Doctor barely standing from his unstable regeneration, Tegan spots the keys left in the ignition of an arriving ambulance. Acting on instinct, she …

Security forces close in on the fleeing fugitives while Adric fights back in vain, delaying capture long enough to alert his friends though not long enough to escape. His resistance …