Ground combat -- no blood is seen due to science fiction weaponry.

A man's face is stretched out and starts to rip with some blood (and, it is implied, the rest of his head since he dies).

Spaceship explosions, ray-gun fire.

Somewhat gruesome plastic-surgery procedures.

Two people are trapped under falling rocks. They are released but someone injured.

"God" is used as a casual curse. "Bastard" is said once.

Drinking between an amorous couple.

Brief mention of an addictive space narcotic that was a major plot point in one of the Star Trek television series.

The several instances of shootings and explosions can be frightening.

Some of the characters alien appearance may be frightening.

A man's face is stretched out and starts to rip with some blood (and, it is implied, the rest of his head since he dies).