b'The Geometry of Urgency: Why Minutesbut the importance of a quick response is always true. Matter in a Missing Child Response Conversely, when I teach active threat response options to older school students By Glen Moore, MSBAs Center for Education Safety and staff, I use this concept to illustrate A s Missouri prepares for the World(8.8 acres). See figure on the next page.how evasion/running, when appropriate, is a great option especially if you travel Cup, there are many excitingAt five minutes, its a 35.7 acre searchfor a long-enough time and at a relatively opportunities, but also the needarea. At eight minutes, its a 143.0 acrefast pace. You will be virtually impossible to prepare for certain challenges.area. At 16 minutes its 571.9 acres. Noticeto locate if you get far enough away and One of these challenges is thehow the search area does not double asconceal your location until you can potential for missing children. Any majortime doubles. This is because the radius issummon assistance.event faces this possibility. Schools facesquared when determining the area of aFortunately, studies of lost people it daily. Although most of the time whencircle (. Each time you double the radius,have shown certain behavior patterns a child is missing, the event is short-livedyour search area becomes four timescorrespond with different age ranges, and all ends well. However, if these eventsgreater. At one hour, its 8,042.5 acres, orpopulation types, and terrains. Robert are not resolved quickly, the subsequent12.57 square miles. Imagine if a vehicleKoesters excellent reference, Lost Person response becomes exponentially morewas involved. Time is not on our side.Behavior (2008), is a tremendous resource. difficult as time elapses. Wasted time can make it almostThere is also an IOS app available for a One reason is a matter of simpleimpossible to establish an effectivenominal cost. Others have continued the geometry. If a child wanders fromperimeter, even with a goodresearch. For specific guidance regarding the school campus with an unknownunderstanding of lost person behavior.planning and response, the National direction of travel and they are traveling atEven with a known direction of travel,Center for Missing and Exploited a walking pace of two miles per hour, thethere are typical dispersion angles whichChildren (NCMEC) is an outstanding child would hypothetically travel aboutnecessitate a fairly large area of focus if anyresource for this type of preparation.176 feet. The search area would be 97,314significant time has elapsed. The aboveThis Spring, Missouri School Boards square feet (2.2 acres) within one minute.example is not necessarily an accurateAssociations Center for Education Safety, At two minutes, its 389,255 square feetrepresentation of how a child might travel,in collaboration with the Department Your WindowFilm ExpertsTotalTintingSTL.com(636) 474-8468VINYL SOLAR DECO SECURITY20|SCHOOL PLANT MANAGER MAGAZINE|SPRING 2026'