Maintenance, Repair and Operations (MRO) for Sprinkler and Fire system with EON Merged-XR. This MRO Fire system knowledge metaverse experience took less than 300 seconds to create from scratch with EON Merged-XR in a code-free environment with no preexisting professional development experience from the creator. This is a pragmatic approach for millions of students to build the Knowledge Metaverse for learning, training & performing TODAY just using a mobile device.