Dear CrabTreeCJ -Wildland Firefighters continue to use a variety of Garmin models, including the Garmin 60Csx. Here are a couple of quick pointers.- Any GPS or smartphone that creates .gpx files can be added to your ArcGIS project using this add-in ArcGIS - GPX file importer for ArcMap - For viewing, .gpx files are also supported by ArcGIS Online in web maps and look for more .gpx support in future ArcGIS for Desktop releases.- Here is a link to a group that discusses GPS use in the field for Search and Rescue and they may have more insight on specific GPS models (see this blog for more information http://bit.ly/s25ePy) on the SARGIS group) and their accuracy.I hope this helps!- Paul