A sudden airspace shutdown over El Paso this week left travelers scrambling and officials searching for answers. Early reports indicated that no flights would be allowed in or out of El Paso for ten days — a restriction officials say we haven't seen since the September 11 terrorist attacks. Multiple officials at the local, state, and federal levels said they had not been given advance notice. Just hours later, the Federal Aviation Administration (FAA) lifted the ground stop, but questions remain about how such a sweeping closure came to be. New reporting suggests Border Patrol officials may have been preparing to test an anti-drone laser system on loan from the Department of Defense.