MESA, Ariz.—As the owner of Rekt Drones in Mesa, Arizona, Pete Phimphavong has seen many ups and downs in the seven years that he has been selling, servicing, and test-flying both commercial and recreational drones. “There’s been a lot of things going on” with the industry lately, Phimphavong said. “Especially with this holiday season.” “Not only with the drone scare but with the upcoming possibility of tariffs,” he said. Phimphavong was alluding to President-elect Donald Trump’s threat of 100-percent import tariffs on any country that wants to replace the U.S. dollar—China, in particular. He said that adding tariffs would make his products more expensive and hurt his business….