This program is being used right across North America. It falls under the auspices of the International Association of Chiefs of Police. They have a drug recognition expert section which, in turn, has a technical advisory panel. The technical advisory panel is composed of police officers, members of the bar, toxicologists, physicians, and ophthalmologists.
So we have subject matter experts to make recommendations to change the program, and every two years the program undergoes some changes. So it's constantly being made better as new technologies or new evidence comes forward to warrant a change.