11.  Any shots fired at the helicopters would be a clear signal that hostile forces were there.

12.  A CIA officer had, in fact, been the only reported death from hostile forces in Afghanistan before Friday.

13.  But a long-range missile in the hands of a hostile force does not pose a significant new danger unless the missile has a nuclear or biological warhead.

14.  Clinton worked prodigiously to bring hostile forces together in Northern Ireland and the Middle East.

15.  For ages, nations have dreamed of building invulnerable shields to protect themselves from hostile forces.

16.  He had argued that their deaths, while tragic, did not meet the requirement of suffering injury or death from hostile force, Pentagon officials said Tuesday.

17.  Hostile forces, not trust or personal affection, have driven them together.

18.  Hostile forces, razor wire and land mines surround the base on three sides, with the Caribbean Sea on the other.

19.  In previous attacks, the hostile forces have rigged ingeniously simple timing devices that launch the mortars or rockets long after they have fled the scene.

20.  It is used mostly among teen-agers, as a secret code by which they can bond and evade surveillance by hostile forces, like parents.