I quoted  Dr. Richard Walton’s textbook, Cold Case Homicides: Practical Investigative Techniques (CRC Taylor & Francis 2006 NY) Page 351- 

  “The importance of this investigative tool in cold case homicide investigation cannot be overstated. In thepast, jurisdictions tended to act independently in homicide investigations, failing to realize or admit that another jurisdiction might hold the key to solving their case. DNA and the CODIS system force the issue, bringing together the scene and offender.”

Today, just eight days later, this article appeared on Page One of the Los Angeles Times:

The article say’s it all.  How many ZODIAC crimes are waiting to be connected and cleared by one simple act? All that needs to happen is for law-enforcement to obtain and enter Zodiac’s DNA into CODIS. The talented crime-technicians and their national  data base will do the rest.