While the band was very popular in Europe during this time they had not yet made commercial progress in the United States. Magazines such as "Kerrang!" publicized Dokken in the UK. Juan Croucier left Dokken in 1983 just prior to the release of the "Breaking the Chains" video to join Ratt. He was replaced by Jeff Pilson, who joined in time to film the video (without having played the song). The album "Tooth and Nail" was released on September 13, 1984. The album contained several hit songs including "Just Got Lucky", "Alone Again", and "Into the Fire", and sold over one million copies in the US alone, peaking at No. 49, while selling another estimated one million copies worldwide. On November 9, 1985, the band's third album "Under Lock and Key" was released. It also sold over one million copies with the singles "In My Dreams" (#24), "The Hunter" (#25) and "It's Not Love". During this time in the 1980s, Dokken opened for such bands as Judas Priest, AC/DC, Aerosmith, Dio and Kiss, among others. The 1986 documentary short "Heavy Metal Parking Lot" features fans of Dokken and Judas Priest tailgating before a concert in Maryland. Following a successful tour with Scorpions, Dokken returned to the studio in December 1986 to record "Dream Warriors", a song for the movie soundtrack "". The track brought the band to the attention of many UK hard rock fans. The song was released as a single ("Dream Warriors" / "Back for the Attack") on February 10, 1987. After this release, the band took nearly 6 months off before recording "Back for the Attack". The album was released on November 27, 1987, with the singles "Burning Like a Flame" (#20), "Heaven Sent" and "Prisoner" (#37) making the album the band's most successful release, reaching No. 13 on U.S. charts. It also included a remixed version of the single "Dream Warriors" (#22), and the accompanying music video featured band members interacting with the film's characters. "Back for the Attack" became Dokken's third record to reach platinum status. After releasing "Back for the Attack", the band toured as part of the Monsters of Rock Tour 1988 festival in the summer of 1988 along with Van Halen, Scorpions, Metallica, and Kingdom Come.