Mel Gibson:Capt. Daniel McCormick;Jamie Lee Curtis:Claire Cooper;Elijah Wood:Nat Cooper;Isabel Glasser:Helen;George Wendt:Harry Finley;Joe Morton:Cameron;Nicolas Surovy:John;David Marshall Grant:Lt. Col. Wilcox USAF;Robert Hy Gorman:Felix;Michael A. Goorjian:Steven;Veronica Lauren:Alice;Art LaFleur:Alice's Father;Eric Pierpoint:Fred;Walton Goggins:Gate MP;Amanda Foreman:Debbie;Karla Tamburrelli:Blanche Finley;Kenneth Ransom:Officer at Warehouse