Does Intterra communicate two ways with IRWIN or just feeding Intterra?

Intterra does not communicate back to IRWIN automatically, we only flow their data into Intterra. Any data created in an Intterra service stays within Intterra, and anything created in the NIFS will be available for all who have access to the service.

There are several ways data can be shared out of Intterra:

The export layer tool can be used to export a geoPDF, ESRI geodatabase, and ESRI shape files for use in other tools. There is a 1000 feature limit for GIS products.
Most of the aerial intel data can be exported as KML vector and images and videos from the Airborne/Satellite Intel Tool.
Screenshots can be captured and printed and emailed.