You know, as ridiculous as this sounds, it makes perfect sense. Having seen our neighbor's 4 horses (now two) turn a fairly large grass field into a putting green in about 8 months, 700 goats could probably eat up all of Cali's grass lands and several homes if left unattended.
However, I don't think that we should label them as homeland security's secret weapon. I doubt the terrorists are belly crawling through the high weeds of an open field toward a city of 30 million.
They're taking the bus.