A similar story occurred from the pursuing end in the 1980’s South West African Border War.<p>A special vehicle based South African unit called Koevoet(crowbar) was unable to capture an infiltrator who was on foot over hundreds of kilometres and a number of days.<p>The infiltrator discarded hypodermics, used for injecting meth, along the way.<p>It is an amazing chemical compound, but one with horrific negative consequences, even when carefully prescribed.