NEW : Turkey asks NATO to consider no - fly zones , senior Turkish official says . Turkey 's National Security Council says it will guard against ` ` hostile action '' by Syria . Air defense systems and tanks have been moved to the border , state media says . Personnel have been travelling in military vehicles for two or three days , a villager says .
NEW : Turkey asks NATO to consider no-fly zone , senior U.S. official says . Turkey 's National Security Council says it will act against `` hostile action '' by Syria . Air defense systems and tanks have been moved to the border , state media says . Personnel have been arriving in military vehicles for two or three days , a villager says .