Parallel doves/hawks demonstrations (a peace sign becomes a bludgeoning weapon in the ensuing riot) set the stage for the Republic’s "week of unadulterated nightmare," a choice Twilight Zone installment, Rod Serling screenplay and all. . . . Frankenheimer keeps an ominous tremor subtly coursing through evenly-lit, deep-focus compositions of corridors, chambers, conferences and meetings, a sharp edit hopscotches from the lunar desert of El Paso to a battleship off the coast of Gibraltar.