Under Siege 2: Dark Territory (1995) is a high-octane "Die Hard on a train" sequel that represents the peak of Steven Seagal's leading-man career before his transition to direct-to-video features. Directed by Geoff Murphy, the film doubles down on the "invincible hero" trope while delivering a more ambitious, tech-heavy premise than the original.

Retired Navy SEAL and chef (Steven Seagal) is traveling by train with his estranged niece, Sarah (Katherine Heigl), to attend his brother's funeral. The journey is hijacked by a group of mercenaries led by Travis Dane (Eric Bogosian), a disgruntled, eccentric computer genius who has seized control of a top-secret military satellite weapon, Grazer One . Using the moving train as an undetectable mobile command center, Dane threatens to destroy the Eastern Seaboard for a billion-dollar ransom. Ryback must dismantle the mercenaries one by one with the help of a quick-witted train porter, Bobby Zachs (Morris Chestnut). Under Siege 2: Dark Territory - film-authority.com