Aviation authorities are scratching their heads over a mysterious flying object in the skies above Colorado that almost caused a mid-air crash. The object was sighted by a commercial jet pilot, who claimed to air traffic controllers that some kind of flying craft got too close for comfort on Monday. In a transmission that appeared on LiveATC.net, the operator of the Cessna Citation 525 CJ1 says: 'A remote controlled aircraft, or what? ... 9News reported the Citation was about 8,000 feet above sea level, or about 2,800 feet above the ground, at the time the pilot reported the seeing the...