How does cocaine reach Detroit?

It is possible thru Canada lets say Montreal or Toronto but most likely it comes in the US border from Mexico in trucks and into NY through containers as well as flown drop off points in the Florida keys. If it comes into US from the border the stopping off points are Arizona and burial for a month or two or just being distributed to different gangs who trade it and then exchange for guns. its then delivered to, Iowa, Chicago, and points east finally of course getting into Detroit ! these are the old and still regular routes, there are others too.