This is very interesting and both old and new info to me. Make of it what you will, but this specific DoD/Dr.Royea/Caltech/NDT contract appears to have started in 2016, right AFTER Dr. Royea personally worked on developing the MYDX/Cannadx analyzers/sensors during the old NDT/MYDX Joint development agreement. Dr. Royea of Caltech and NDT was also a contributor to the MYDX white paper. For those who don't know, NDT is who exclusively licensed around 60 or so of Dr. Nathan Lewis's (Caltech) patents to MYDX. Check out the links below:

Identification of Multiple Illicit Drugs Using a Handheld Detector Based on Chemiresistive Sensor Arrays:

"Next Dimension Technologies and Caltech will jointly develop a handheld detector to meet the Armys need for a field-based illicit drug identification system. The project will focus on the design and development of a dual-mode chemiresistive sensor array capable of detecting key drugs of interest, including synthetic cannabinoids and opioids..."

https://www.sbir.gov/sbirsearch/detail/1304151
https://www.sbir.gov/node/249174

https://www.mydxlife.com/wp-content/uploads/M...aper-1.pdf