 Item No. SCP-2872 Object Class Keter Special Containment Procedures Superceded, Sea Addendum 2872-1 SCP-2872 is kept at a private stable, where the resident staff care for it. SCP-2872 should receive a full physical examination from Foundation Medical Personnel once every six months, and should be kept in prime racing condition with the assistance of Foundation Approved Jockeys. SCP-2872 must win the Kentucky Derby at least once every five years. Superceded, Sea Addendum 2872-2 SCP-2872 is to be kept in a zoological containment cell, 15 meters beneath Site-12. The dimensions of this cell are calculated to deny SCP-2872 the possibility of acceleration. A medical examination will be carried out once every four weeks to ensure it does not adapt to its new containment procedures. SCP-2872 is currently uncontained. Astronomical departments and satellites are monitoring its path and calculating its final trajectory. Description SCP-2872 is a thoroughbred stallion of indeterminate origin and pedigree, with a height of 1.85 meters and a mass of 485 kilograms. It is an exceptionally skilled racehorse, with its record in the Kentucky Derby standing at two minutes one second. Under normal circumstances, its sole anomalous property is the fact that it does not notice the age. SCP-2872's other anomalous property manifests five years into the last time it won the Kentucky Derby, whereas its usual demeanor is compliant, at this time it will become restless and run in large loops. Within two days of entering this phase, SCP-2872 will start to run continuously, accelerating until it is fast enough to demolish any fence or wall in its way. It is physically unharmed by any impact in this state. Once SCP-2872 is unimpeded, it will reach a top velocity of approximately 320 meters a second. Note, this is inaccurate as of Addendum 2872-2, and will continue to run in discorectangular tracks across distances measuring hundreds of kilometers. The only known way to cause SCP-2872 to decelerate is for it to hear the words, Whoa Boy. This will cause it to come to a stop over a period of 50 meters, though the sound must be adjusted to take into account the Doppler effect before it will have the desired effect. SCP-2872 came to the Foundation's attention in 1960-██, shortly after that year's Kentucky Derby, and which is believed to have placed second. SCP-2872 was the first recorded instance of SCP-2872 manifesting its anomalous deceleration, and was responsible for $30 million in damages, including the destruction of a three-mile tract of I-24. After multiple attempts to restrain the as-yet unidentified anomaly, SCP-2872 was finally calmed by the intervention of an unknown African-American male in his late fifties, hypothesized to be the owner. He had agreed to transfer custody of SCP-2872 to the Foundation, outlining the five-year principle for neutralization of the destructive effects, but left at significant speed before he could be questioned further. Attempts to trace him have been unsuccessful. Attempts to house SCP-2872 with Foundation assets led the two further manifestations before an arrangement was made with a private stable and trainer, and SCP-2872 has consistently won his derby since. Addendum 2872-1 It is felt that the current procedures amount to nothing more than appeasement of SCP-2872, rather than actual protection from its manifestations. See SCP, not a hotel. As such, SCP-2872 has been relocated to Foundation property, and the containment procedure is rewritten to neutralize the anomaly. Dr. ████, 2000 Addendum 2872-2 In 2005 years of the SCP-2872 won the Kentucky Derby, it began to show signs of agitation as it was unable to run or walk in its cell. Administration of tranquilizers had no effect, nor the previous failsafe of Woe Boy, and five hours after its distress began, SCP-2872 violently erupted from its cell through to the surface of Site-12, causing ██ injuries and ██ fatalities. After breaching containment, SCP-2872 achieved escape velocity and entered a trajectory towards the constellation Aculius. As of the time of writing, SCP-2872 is 10 light years away from our solar system, and appears to have lost forward momentum. Analysis suggests that it is turning.