Fairfax County 2011 and 2015 land cover data and LiDAR surfaces are now available as image services in ArcGIS Online. The data layers can easily be discovered by searching with the keywords "Fairfax" and "LiDAR" and "Land Cover." Each dataset has links to metadata that describes the layer in terms of use and accuracy. Image services can be used in web maps or desktop GIS software for analysis. Please note that download of data tiles has not been enabled on these layers, however, tiled LiDAR data is available from the USGS National Map Viewer.