How to open .DT1 file extension?

If you cannot open a new file that has been saved in the .DT1 format you need to download the appropriate software. The manufacturer of .DT1 files is National Geospatial-Intelligence Agency; .DT1 files belong to the GIS Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .DT1 files. Activities performed in the order described should solve the problems with all the files in the .DT1 format.

• What is .DT1 file?
• How to open .DT1 file?
• What is .DT1 file?