an Entity references as follows:
The Fear of the Dark Tour was a concert tour by the heavy metal band Iron Maiden from 3 June 1992 to 4 November 1992. The tour saw the band make a return headline appearance at the Monsters of Rock festival at Donington Park, which they headlined before a reduced crowd of 75,000 (the audience being capped after an incident in 1988 where two fans were crushed to death). The performance, which featured a guest appearance by then former guitarist Adrian Smith during "Running Free", was released audio and video formats.