From the 21st to 27th of July I attended a training course on Civil-Military Approaches for Maritime Security organised by the Institute for Security Governance, in Monterey, CA. The course is part of the US capacity building work on maritime security and taught since 2008. As part of the course I delivered a module on maritime domain awareness, relying on my 2015 article on Maritime Domain Awareness in Southeast Asia as well as the results of the SafeSeas Best Practice Toolkit and the model of maritime security governance it outlines. I also reviewed the core ideas behind Maritime Domain Awareness, and discussed with the participants the core hindrances to information sharing.