US spy drone downed on Saudi border US spy drone downed on Saudi border Yemen's Houthis have shot down a US spy drone, the RQ-20, on the Saudi border. The drone struck while patrolling the skies over the Yemeni border town of Harad. A spokesman for Yemen's armed forces, Yahya Sari, said a US drone had been shot down over their airspace. A few days ago, a Saudi drone was shot down by army and civilian air defense units in Yemen's Saada province. Yemen's Houthi…