Air traffic will be reduced by 10%, the cuts will include the 30 busiest US airports:affecting around 3,500 to 4,000 flights dailyReuters citing unnamed sources. Earlier:US Transport Secretary has warned that the air system is becoming riskier due to shut downUS flight chaos worsens - further flights will be cut as shut down continues---Folks in the US are nervously eyeing Thanksgiving travel plans. Book a Greyhound seat as back up might be a good idea. This article was written by Eamonn Sheridan at investinglive.com.