Two "VIPs" were set to arrive at a sleepy airport in the desert near the U.S.-Mexico border.

That's all airport manager Bill Provance knew Thursday before the twin-engine plane touched down and law enforcement swarmed the tarmac. The "VIPs" turned out to be Ismael "El Mayo" Zambada, one of the world's most elusive and dangerous drug kingpins, and Joaquin Guzman Lopez, the son of Zambada's partner-in-crime, Joaquin "El Chapo" Guzman.