Pope Francis was greeted by greetings from two speakers waving drones before he celebrated his feast day.

DES MOINES, Iowa – The practice of flying drones outside presidential candidates’ motorcades is getting a new group of citizen officials on hand in Tuesday’s election campaign.

This election cycle, the winning candidates and their surrogates are airborne once again. The United States Air Force agreed this year to operate a nationwide, unmanned aerial drone ground station allowing candidates and their surrogates to deliver messages to voters.

While some candidates are required to fly over campaign events, the Air Force said once a presidential election is under way, candidates and their surrogates won’t fly over campaigns anymore but the other candidates, this time in Iowa.

The Iowa City congressional delegation, including Republican U.S. Sen. Joni Ernst, says the drone ground station allows campaigns to keep a low profile and maintains security.