The details of exactly what happened before the Federal Aviation Administration shut down the busy airport in the Mexican border city on Wednesday aren’t entirely clear, but a source familiar with the situation told AP that the laser was deployed by U.S. Customs and Border Protection without coordinating with the FAA.

Two months ago, Congress agreed to give more law enforcement agencies the authority to take down rogue drones as long as they are properly trained. That could make situations like the one in El Paso more likely. Previously, only a select few federal agencies had that power.

Here’s a look at what happened and the issues that raised:

Communication issues acknowledged

The government would say only that the airspace was shut down when an incursion by Mexican drug cartel drones was neutralized.

But the two people who discussed sensitive details on condition of anonymity said the FAA grounded every aircraft in the El Paso area over concerns about the safety of the laser system being used near commercial planes. The restrictions were initially expected to last 10 days, but then they were lifted a few hours later.

Homeland Security Secretary Kristi Noem said Friday that the government agencies involved in El Paso are working to address the concerns that led to the cancellation of more than a dozen flights and sent travelers scrambling.

“This was a joint agency task force mission that was undertaken and we’re continuing to work on the communication through that,” Noem said in Arizona.

But drone warfare expert Brett Velicovich said the dysfunction in Texas raises questions about whether the U.S. will be prepared to deal with a significant drone threat.

“We need to simplify the authorities for who is really in charge and get these egos out of the way from these different agencies before an American gets hurt,” said Velicovich, who founded drone maker Power.us and consults on ways to mitigate their threats.

Drones can be a threat

Armed drones carry out devastating attacks daily in Ukraine. The unmanned vehicles have also allowed Ukraine to strike deep within Russia.

Velicovich, who used to use Predator drones in the military to bomb targets, said it wouldn’t be hard for someone with malicious intent to buy a drone for a few hundred bucks and do great harm at a major public event like a World Cup match or the celebrations of America’s 250th birthday that are planned this summer.

Cartels routinely use drones to deliver drugs across the Mexican border and surveil Border Patrol officers. Officials told Congress last summer that more than 27,000 drones were detected within 1,600 feet (500 meters) of the southern border in the last six months of 2024.

The government recently handed out $250 million in grants to the 11 states that are set to host World Cup matches this summer to help them prepare for the threat of drones. Another $250 million in grants will be awarded later this year to strengthen the nation’s drone defenses.

More near misses involving drones

The threat to planes from drones continues to increase along with the number of near misses around airports. Homeland Security estimates there are more than 1.7 million registered drones flying in the United States, and that number has been growing.

Larger drones are required to carry a radio transponder that identifies the drone’s owner and broadcasts its position to help avert collisions. Cities can also invest in additional sensors around stadiums to help quickly detect drones.

Airspace Link, a Detroit company, created a low altitude air traffic control system to track drones and can alert authorities who might soon be able to take action. Cities can buy additional sensors to upgrade that system around stadiums or other high-profile locations.

“We don’t want something to happen,” said CEO Michael Healander. “But we also want to be prepared to have the tools in place to take action, because these are such big global events.”

Acting against rogue drones

Common anti-drone systems use radio signals to jam or force drones to land. But the government has also developed high-powered microwaves or laser beams like the one sources say was used in Texas this week that are capable of disabling the machines.

Some other systems station small drones to take flight quickly and ram into drones that are considered a threat. And there are systems that use bullets to shoot down drones.

Michael Robbins, president and CEO of the Association for Uncrewed Vehicle Systems International trade group, said these counter drone systems are more common in warzones than across the United States. But the government is working to get them into the hands of more officers nationwide.

“It’s our belief that this is important technology that when responsibly used with proper oversight and intensive training will help to mitigate unsafe or malicious drones in the very rare instances where that needs to occur,” Robbins said.

Pilots worry about drones

Allied Pilots Association union spokesman Capt. Dennis Tajer said he’s not sure how big of a threat the counter drone technology is to the American Airlines jets he flies because so few details have been released about what happened in Texas. And officials with Homeland Security and the FAA didn’t respond to questions about it again on Friday.

Tajer said he’s more concerned about the possibility of a passenger jet running into a drone because that could bring the plane down. A year ago, 67 people were killed when an American Airlines jet collided with an Army helicopter near Washington, D.C.

“You don’t have to be a pilot, an engineer or a defense expert to understand that two pieces of metal in the sky that one doesn’t know the other is there and is uncontrolled is dangerous,” Tajer said. “We’ve got to keep those two pieces of metal away from each other.”