The perps would be gone by the time the troops show up.
Disagree..........Drones are going to give a visual...and can track them...until someone shows up.
The drones would track the fence jumpers, giving constant GPS location as they flew. If there were several jumpers, there would be several drones. If they jumped in cars, the drones could outrun them, get license plate numbers and get facial recognition information when they got out.