Counter-drone lasers will now be able to be used along the southern border. The Federal Aviation Administration agreed with the Pentagon Friday that they are safe, so additional airspace closures aren’t expected. The FAA and Defense Department have signed an agreement outlining the safety precautions that will be employed when these lasers are used to protect travelers. Earlier this year, the FAA twice shut down parts of Texas airspace after anti-drone lasers were deployed. In early February, the El Paso airport had to close for several hours, leaving many travelers stranded. A demonstration of the lasers conducted last month convinced the FAA that they can be used safely.