Question: Who was also an airline pilot, Billy Gibbons or Bruce Dickinson?
Context: "Got Me Under Pressure" is a song by ZZ Top from their 1983 album "Eliminator".  The song was produced by band manager Bill Ham, and recorded and mixed by Terry Manning.  David Blayney (ZZ Top's stage manager of 15 years), in his book "Sharp Dressed Men" described how the song was pre-produced: Billy Gibbons and Linden Hudson (Houston engineer and songwriter) wrote the whole song and created a recorded demo all in one afternoon without either Dusty Hill (ZZ Top bass player) or Frank Beard (ZZ Top drummer) even knowing about it.  Linden created the bass on a synthesizer, created drums on a drum machine and helped Billy Gibbons write the lyrics; Billy performed the guitars and vocals. The Best of Bruce Dickinson is a compilation album released in 2001 by Bruce Dickinson.  Two versions were released; a single disc version and a bonus disc version.  On the front cover, the album title is imposed upon the seal of the demon Astaroth. William Frederick Gibbons (born December 16, 1949) is an American musician, singer, songwriter, producer, and actor, best known as the guitarist and lead vocalist of the American rock band ZZ Top.  He began his career in the Moving Sidewalks, who recorded "Flash" (1968) and opened four dates for the Jimi Hendrix Experience.  Gibbons formed ZZ Top in late 1969 and released "ZZ Top's First Album" in 1971.  The albums that followed, "Rio Grande Mud" (1972) and "Tres Hombres" (1973), along with extensive touring, solidified the group's reputation as a hard-rocking power trio. "Born in '58" is the last single from Bruce Dickinson's debut solo album, "Tattooed Millionaire", released on March 25 1991.  The song is about Bruce Dickinson's early life, growing up with his Grandparents in Worksop (Dickinson was born in 1958). Iron Maiden are an English heavy metal band formed by bassist Steve Harris in 1975.  The band's first album, 1980's "Iron Maiden", was written primarily by Harris, with vocalist Paul Di'Anno co-writing two tracks and guitarist Dave Murray contributing "Charlotte the Harlot".  The 1981 follow-up, "Killers", was written almost entirely by the bassist, with frontman Di'Anno contributing only to the title track, "Killers" (the North American bonus track "Twilight Zone" was credited to Harris and Murray).  Bruce Dickinson replaced Di'Anno after the release of "Killers", although he did not contribute any songwriting to "The Number of the Beast", released in 1982, which featured three songs co-written by guitarist Adrian Smith.  "The Number of the Beast" also spawned Iron Maiden's first UK Singles Chart top ten in the form of "Run to the Hills", which charted at number seven on its release.  It was not until 1983's "Piece of Mind" that the songwriting process became a more varied and collaborative approach, with just four of its nine tracks being credited solely to Harris, two to Dickinson and Smith, one to Harris and Murray, one to Dickinson alone, and one to Harris, Dickinson, and Smith.  The Dickinson and Smith-penned "Flight of Icarus" was the first Iron Maiden single to chart in the United States, reaching number eight on the "Billboard" Mainstream Rock chart. The Winter Tour (also known as "House of Blues Residency" was a tour by Social Distortion.  As its name applies, most of the shows were based out of the House of Blues in Orange County (Anaheim, San Diego, West Hollywood) with a couple of shows heading out to Las Vegas and Tempe, Arizona.  Even though similar, this tour was not a part of the Hard Times and Nursery Rhymes tour, as most of the material played here was pulled from most of the band's catalog.  This is also not the first time Social Distortion has done a tour like this, it has been done before numerous times since 2001.  As with previous House of Blues tours, the band played rare songs and new songs and brought out guests this time, such as Billy Gibbons and Mike Ness' own son Julian Ness.  They also brought out Eric "Jailhouse Blues" Von Herzen who played harp for "It Coulda Been Me" and "Drug Train" on Social Distortion (album) and they also played ZZ Top's La Grange (song) with Billy Gibbons.  The band also premiered songs like "Far Side of Nowhere", "Writing On the Wall" and performed songs that have not been played in a while like "It Coulda Been Me", "99 to Life", "Footprints On My Ceiling", "Hour of Darkness", "Diamond In the Rough" and even played the White Light, White Heat, White Trash album in its entirety at some shows. "The Wicker Man" is a song by Iron Maiden, released as the first single and opening track from their album "Brave New World" in April 2000.  It is also the first single by the band since the returns of vocalist Bruce Dickinson and guitarist Adrian Smith in 1999.  It was co-written by Smith, Dickinson and Steve Harris.  It was co-produced by Kevin Shirley and Harris.  The title is inspired by the British cult film of the same name.  The song should not be confused with "Wicker Man" from Dickinson's solo career, the lyrics of which are more closely themed around the film.  The latter song can be found on the 2 disc edition of "The Best of Bruce Dickinson". Man of Sorrows is the second single from Bruce Dickinson's fourth solo album, "Accident of Birth", released on 3 June 1997.  The song was originally written for a film called Chemical Wedding, which existed only as a script at the time (it was eventually filmed and released in May 2008).  The original version of the song is included on the Best Of Bruce Dickinson album and was recorded in 1990, engineered by André Jacquemin (who is better known for his sound-engineer work for Monty Python) and with Janick Gers on guitar. Paul Bruce Dickinson (born 7 August 1958), known professionally as Bruce Dickinson, is an English singer, songwriter, musician, airline pilot, entrepreneur, author and broadcaster.  He is the lead singer of the heavy metal band Iron Maiden and is renowned for his wide-ranging operatic vocal style and energetic stage presence. The Book of Souls World Tour was a concert tour by Iron Maiden, held in support of their sixteenth studio album, "The Book of Souls".  The first leg of the tour saw the band play shows in 36 countries across six continents, which included their debut performances in El Salvador, Lithuania and China.  With 117 shows, it was the longest tour with Bruce Dickinson on vocals since the "Somewhere on Tour" in 1986-87.  The group, their crew and equipment were transported on a customised Boeing 747-400, nicknamed "Ed Force One", which was piloted by vocalist Bruce Dickinson.
Answer: Bruce Dickinson