If you have access to SIPRNet, I can point you to tools my Agency, the National Geospatial-Intelligence Agency (NGA), has for classified use. Our GEOINT Services office provides Google Earth, ArcGIS Earth, and ArcGIS.com-ish services. Send me a note at roy.a.rathbun@nga.smil.mil.
Also, check out our Protected Internet eXchange (PiX), at www.pixtoday.net; you should recieve an invitation to join. On the left side panel there is an app called GeoPiX Beta that allows you to simply annotate points with labels on a map. There will be more functionality in the future. And, if you're lazy, check out the RFI button a little higher on the left. You provide the data, and someone else can make you a map. Again, unclassifed, but access controlled. You can also invite your friends and mission partners to PiX, foreign included. Do you have friends?
Had enough yet?