{video} One of the most heavily surveilled strips of one of the most heavily surveilled nations on earth was brought to a standstill and shut to air traffic for more than 24 hours at the peak of the holiday season on Thursday by a humble pair of drones. The shutdown scrambled hundreds of flights, stranded tens of thousands of passengers and reduced the British government to playing cat-and-mouse with two drones that, possibly with little more than an iPad, were repeatedly sent floating over the runway of the country’s second-largest airport in what officials called a “deliberate act” before vanishing from view. With ... (full story)