Temporary flight restrictions (TFRs) covering the U.S. border with Mexico in Arizona and New Mexico may not be as temporary as some would wish

 - September 21, 2006, 11:42 AM

Though active only in evening and night hours, they will be in effect through December 31 and are likely to be renewed. Originally extending from 12,000 feet to 14,000 feet, they are expected to be changed to extend from 14,000 feet to 16,000 feet. The TFRs were issued in response to U.S. Customs Service and Border Patrol unmanned aerial vehicle surveillance operations.