For example, the SD county BP had a tracking dog program which was phenomenal. Illegals hiding in canyons in heavy cover were easily found by the dogs, who "pointed" and led to the detention of huge numbers of border jumpers. Great huh?
Too great. The illegal advocates cried and whined about how terrifying and humiliating it was, to be found by dogs. The tracking dogs were taken off this duty they were trained for, and put on border crossing point drug sniffing duty, which they were NOT trained for.
This is why I say the UAVs will be shelved, if they are effective.
1,000 patrol dogs, highly trained (with the advantage of protecting the arresting BP agent) = $500,000 per year (very generous estimate).
1 Hermes Drone, full of bugs and subject to loss and high maintence costs = $2,000,000 each.
Cost of either in lost profits from using cheap illegal labor to big U.S. business if used effectively and without political scavenging = HUNDREDS OF MILLION$.
Do the math.