Background: Paul Bruce Dickinson was born in Worksop, Nottinghamshire. His mother, Sonia, worked part-time in a shoe shop, and his father, Bruce, was a mechanic in the army. Dickinson's birth hurried the young couple, then just teenagers, into marriage. Initially, he was brought up by his grandparents; his grandfather was a coal-face worker at the local colliery and his grandmother was a housewife.
Context: Along with Adrian Smith, Dickinson rejoined Iron Maiden in 1999 with Janick Gers remaining in the band, after he was approached by manager Rod Smallwood. Smallwood also spoke to Steve Harris about Dickinson's return, who initially had reservations about the prospect, but soon came round to the idea, deliberating that they knew of his abilities and that it was a case of "better the devil you know". Harris and Dickinson agreed to meet at Smallwood's home in Brighton in January 1999 for the first conversation they would have with each other since 1993. Although both men were nervous about the encounter, upon seeing each other the tension immediately dissipated and both agreed that Dickinson should return to the group. After embarking on a small tour, the band set about recording Brave New World, their first studio album with Dickinson since 1992. Dickinson insisted that they find a replacement for the now retired Martin Birch, the band's regular producer, and record in a different studio than the one in which they made No Prayer for the Dying and Fear of the Dark, to which Harris agreed. The album was recorded at Guillaume Tell Studios, Paris with producer Kevin Shirley, after which Iron Maiden undertook a supporting tour culminating with a performance at the Rock in Rio festival before a crowd of 250,000. In 2003 they recorded and released Dance of Death at London's SARM Studios with Kevin Shirley, now the band's new regular producer. After two further stints on the road (Dance of Death World Tour and Eddie Rips Up the World Tour) Iron Maiden returned to SARM in 2006 to record their next studio album, A Matter of Life and Death, and embarked on a supporting tour. In 2008 and 2009, the band set out on the Somewhere Back in Time World Tour, which has since been described as "groundbreaking" for its use of Ed Force One, the band's customised Boeing 757, flown by Dickinson himself, and led to the documentary film Iron Maiden: Flight 666, which had a limited cinema release in April 2009. Iron Maiden held another world tour in 2010 and 2011 in support of The Final Frontier, their first album recorded at Compass Point Studios, Nassau, Bahamas since 1986's Somewhere in Time, and which peaked at No. 1 in 28 countries. In September 2014, Iron Maiden began recording their sixteenth studio album, The Book of Souls, at Guillaume Tell Studios, Paris. The release features two songs written solely by Dickinson for the first time since Powerslave, "If Eternity Should Fail" and "Empire of the Clouds", the former originally penned for a possible solo record. "Empire of the Clouds" is notable for being the band's longest ever song, at over 18 minutes in length, and features Dickinson on piano for the first time, which is how the song was written. The band toured the album in 2016, during which Dickinson once again piloted the band's private plane, Ed Force One (now a Boeing 747-400 jumbo jet). CANNOTANSWER
Question: What did John do in 1999?

Answer:

rejoined Iron Maiden in 1999 with Janick Gers remaining in the band,