I'm not working on an NMCI station, but I am Navy. I'm trying to get the MMC_Navigation and Marine Infrastructure to work, but when I add it as a layer or use it as a base map, it's blank.
When i open it in ArcGIS.com, it's just a blank map. Did you have any luck with the viewer? Have you tried a different map?
(This map service contains data about marine and navigation infrastructure which consists of marine oil and natural gas wells, transmission lines, shipping lanes among others within the USA and its surrounding territories.)