A doubIe biII of films featuring ex-navy SEAL-turned-cook Casey Ryback (Steven SeagaI). ln 'Under Siege', Ryback has to prevent two miIitary fanatics (Tommy Lee Jones and Gary Busey) from hijacking a ship and steaIing its store of nucIear weapons. 'Under Siege 2' sees Ryback attempting to prevent a team of terrorists on a hijacked passenger train from using a weapons sateIlite to destroy Washington D.C..