#China military deploys first communications #UAV during naval exercise

...During its mission it disrupted communications, while also acting
as a node for a Chinese military communications network, relaying
"large numbers of information packets" among Chinese forces. When an
'enemy' aircraft approached, the ground control station initiated a
"counter-surveillance deployment plan", and by reducing its altitude
and initiating radio silence the Silver Eagle evaded detection..

http://www.flightglobal.com/articles/2011/07/12/359324/china-deploys-communications-uav-in-naval-exercise.html