<p>An engaged couple and the woman's two oldest grandchildren were killed when a small plane crashed in a southwest Georgia cotton field Sunday.</p><p>The plane, a six-passenger Beechcraft Bonanza, crashed near the Worth/Dougherty county line in the northwest part of Worth County at about 4:30 p.m., said Worth County Sheriff Freddie Tompkins.</p><p>Pilot Leroy Bud Reitmeyer, 66, and his fiancee Marlena Stein, 53, of Vincennes, Ind., were killed. Stein's two grandchildren, Brianne Church, 14, and Ashton Church, 18, of Indianapolis, also died, Tompkins said.</p><p>The plane was heading back from Florida and was scheduled to land at the Lawrenceville-Vincennes, Ind., Airport.</p><p>The plane's wreckage was scattered across a one-mile area, indicating that the accident may have happened at high altitude, said Tompkins, who added there was a severe thunderstorm at the time of the crash.</p><p>"The plane didn't burn. It just disintegrated in the air and fell," Tompkins said.</p><p>Before the crash, Reitmeyer radioed an airport in Jacksonville, Fla., and told controllers he was having trouble, Tompkins said. That was the last word officials had from the plane.</p><p>The National Transportation Safety Board is investigating. Reitmeyer's body has been taken to the Georgia Bureau of Investigation Crime Lab in Moultrie for standard testing. The bodies of the women were taken to Perry Funeral Home in Ashburn, Ga., Tompkins said.</p><p>Owner of CLR Construction, Reitmeyer was also an accomplished pilot and dedicated to aviation, Rabb Emison, former city attorney for Vincennes, told the Vincennes Sun-Commercial in Indiana.</p><p>Stein was a nurse practitioner.</p><p>"She definitely loved what she does, and she took a lot of patients who had no insurance or money to pay," said Cheryl Buss, a fellow nurse practitioner.</p><p>Funeral arrangements for all four are being handled by Goodwin Funeral Home in Vincennes, Ind.</p>
