In March, Reno airport officials say a security breach that prompted them to send passengers through checkpoints a second time was an “innocent mistake.” Reno-Tahoe International Airport spokesman Brian Kulpin said two passengers mistakenly went through a wrong door. Airport police cleared the concourse and had passengers leave planes that were parked on the tarmac. Kulpin says about 1,000 passengers were sent to the other side of security to be re-screened.

Flights were delayed for about 90 minutes.

Kulpin says airport police and Transportation Security Administration officials who questioned the two passengers determined the pair took a wrong turn and “felt bad about what had occurred.”