What to watch out for
Bourne is singularly moral-minded; CIA agents and other killers are deadly, calculating, and cold.
Bourne first appears limping and being chased aboard a moving train; he jumps off, finds a hospital, trails blood everywhere, washes his bloody hands, self-injects a needle full of painkiller, hits one officer and holds his gun on another. Flashbacks throughout show young Bourne's torture (hooded figures, waterboarding, frantic camerawork and dissolves), refer to his girlfriend's murder ("shot in the head"). Scene in morgue shows corpse. Violent acts -- shown in chaotic camerawork and editing -- include explosions (preceded by bomb-making), punching, kicking, flipping, leaping, falling, crashing through a window, car-crashing and -screeching, shooting (by snipers and face-to-face), bone-breaking, stabbing.
In subjective flashbacks, Bourne tenderly kisses Maria (his dead girlfriend), once underwater, as she floats away.
Several uses of "s--t" and "d--n," repeated uses of "h--l" in frustration (e.g., "What the h--l's going on here?").
Drinking, drugs, & smoking:
In flashbacks, Bourne and another man appear to be sedated.