He took his 23-year-old girlfriend, Aleasha Decker, up in the air Aug. 9 under the guise of photographing some relatives' houses in Kalida, about 60 miles southwest of Toledo in northwestern Ohio.
As Kahle's dad steered the plane, Decker looked out the window. She saw the question "Aleasha, marry me?" in 20-foot sheet plastic letters on top of a harvested field. She turned to find Kahle holding out a ring.
A wedding date has been set for June 5, 2010.