1. Flights halted at several major airports in Northeast due to tech problems  The Washington Post
2. FAA outage: Airport operations resume after flight delays, cancellations at major Northeast travel hubs  CNN
3. Hundreds of US flights canceled due to outage  globalnation.inquirer.net
4. FAA grounds planes at major airports for hours  Fox Business
5. Flights at major US airports delayed after cable cut by construction workers  BBC

Source: Google Finance – Market News