ping
If the drone is using the non-encrypted GPS signals then the students send a stronger GPS signal to the drone that causes the drone not to be in their command but to think it is someplace else. However, such a stunt is not only illegal as Hell as any aircraft in the area also experienced the errant GPS signals, but this technique doesn’t work on military drones. They don’t use the same GPS signals. I am suprised to hear the DHS uses drones without GPS encryption, which calls into question their actual success.