James Remar was originally cast as Corporal Dwayne Hicks and had already begun work with the Colonial Marines when his involvement abruptly ended. The public explanation at the time centered on urgent family matters or creative differences with Cameron, but Remar later acknowledged that he had been fired after being arrested for drug possession. His departure created a production emergency because the film had already begun shooting and the Marines had completed intensive preparation together. Michael Biehn was hired the following Friday to replace him. Biehn inherited Remar's armor and arrived too late to participate in the three-week training program that had prepared the rest of the cast with British SAS instructors and Vietnam veteran Al Matthews. The disruption also carried an absurdly dangerous footnote: before leaving the production, Remar accidentally fired a weapon and shot a hole through the set of Frank Oz's Little Shop of Horrors on an adjacent stage. Biehn's replacement performance became definitive, but the incident remained one of the production's hidden examples of how off-camera personal problems could force a major studio film to rebuild a character in mid-shoot.
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