In version 2.1.0 and above you can choose where your pictures are stored. Not only that, but you can have the program copy or migrate your pictures from your database to your file system and vise-versa. If you copy your pictures they will remain in their original location after being copied to the new location. If you migrate the pictures they will be deleted from their original location.
This provides an easy function by which you can take pictures that are scattered throughout your file system and migrate them to the same directory as NM Collector Software JE. If that directory happens to be on a USB flash drive (which is the preferred method for running NM Collector Software) you will now have a copy of all of your pictures on the same USB flash drive.