With the updated versions of F-16s to QF-16S these drones are not only outdated but inferior matched with the stealth drone version of the professional UAVs version in taking out enemy aircraft.
The F-16 was developed for pilot enabled aircraft which was initially for 1980s & beyond!
The UAVs are the current air superior unmanned vehicles derived none other than better termed Radio Controlled Cars to planes. The UAV is substituted with advanced satellite & transmission units installed in basic R/C planes to control & read their incoming flight path for any 8-13 year old child can make himself herself.
Source : http://www.cnn.com/videos/us/2015/04/03/f-16-remote-controlled-fighter-jet-qf--16-orig.cnn-boeing