US defense official has seen indicators that North Korea may be preparing to carry out a new missile test soon. <br/><br/>The CNN broadcaster reported that the official said vehicles carrying equipment for the missile launch had been seen in North Korea's Kusong city in central North Pyongan province. <br/><br/>The launch may occur within six days after such equipment has been seen, according to the broadcaster, and could coincide with July 27, the anniversary of the armistice that ended the Korean War.