What we need is more people running things like RTL-SDRs to acquire data the rich and powerful want hidden to avoid exposure for shady activities.
While I'm thrilled it works well enough to read email.
I hope this thing compiles quickly :)
EDIT: It needs a newer version of GTK than is available in apt for Ubuntu 16.04 LTS, this isn't going to happen for me tonight unfortunately :(
That said, if it's flying overhead you could probably pick something up with a basic telescoping antenna.