Cessna Citation 560, Cresco, Iowa, July 19, 2006–The pilot and copilot of Citation N636SE, registered to Tomco of Nashville, Tenn., were killed on landing at Ellen Church Field Airport (CJJ). The airplane was substantially damaged when it evidently overran the runway and came to rest in a corn field north of the departure end of Runway 33. The flight was en route from University-Oxford (Miss.) Airport to Rochester, Minn., when it diverted to CJJ for unknown reasons.