Background: Stone was born as Douglas Jackson Brooks on June 19, 1956 in Marietta, Georgia. His mother, who was also a country music singer, taught him how to play guitar when he was five. When he was seven years old, his mother placed him onstage to open for Loretta Lynn. His mother and father later divorced, and afterward, he moved to live with his father.
Context: In December 1999, Stone was aboard an airplane which skidded off a snowy runway at O'Hare Airport in Chicago; there were no injuries. Stone began piloting ultra-light airplanes as a hobby in 1999 and 2000. In March 2000, he suffered a broken left ankle, cracked rib, concussion, and bruised kidney after crashing his plane in Robertson County, Tennessee, and was briefly hospitalized before he resumed touring. Stone later said that the accident made him decide to quit flying planes. After the September 11, 2001 attacks, rumors circulated that Stone had been on one of the hijacked planes; a spokeswoman for the singer confirmed that he was at home with his family that day.  Stone signed to Audium Entertainment in 2002 and recorded The Long Way. This album included seven new songs and acoustic re-recordings of "More Love", "Born in the Dark", and "I'd Be Better Off". One of the original songs on it was "POW 369", which was later recorded by Darryl Worley. Stewart Mason thought that it was "not nearly as suffocatingly slick" as Stone's previous albums, but questioned its commercial success. His next album did not come out until 2005, when he signed to the independent label Lofton Creek Records, recording the album In a Different Light. The album included a cover of "Georgia on My Mind", which was the first single, and re-recordings of "In a Different Light" and "Why Didn't I Think of That". A second album for Lofton Creek, My Turn, followed in 2007. It was led off by the single "Nice Problem". William Ruhlmann praised this album for having "a timeless country feel", also saying that "Stone sings with as much fervor and sincerity as ever." Ken Tucker of Billboard wrote that "He sounds as good as ever and his music is still relevant".  In 2013, Stone toured with Bryan White and Shenandoah as part of the "Reliving the 90s Tour". He also returned to acting, with roles in the films When the Storm God Rides and The Story of Bonnie and Clyde.
Question: What was going on with Doug in 2000?

Answer:
Stone began piloting ultra-light airplanes as a hobby in 1999 and 2000.