I guess you lack any knowledge regarding how the Government communicates over TCP/IP. Encryption hardware is not shared between sites. Access is takes multiple parties to configure. Everyone knows how TCP/IP is unsecured by itself, which is why we have encryption that sits over the top.
Do you need me to Google encryption for you coward?
Th problem isn't the encryption, it is the implementation of encryption and the control of the keys. Sure end to end TACLANEs are awesome, it is a guaranteed end to end, software independent, solution. Encryption was available and "implemented on the predators, however it was not implemented the proper way leaving the video feed vulnerable to a $15 piece of software that could run on portable monitors. Had that vulnerability in the implementation not been discovered sooner, the control channels could have been interacted with as well. Shall I google bad implementation of encryption for you, or did you feel like just being a smartass?
Lo! Men have become the tool of their tools. -- Henry David Thoreau