Question

intercontinental ballistic missiles made it possible for a country possessing them to
shoot down enemy airplanes.
strike targets far away.
launch satellites into space.
detect enemy troops at night.

Explanation:

Intercontinental ballistic missiles (ICBMs) are long - range missiles. Their main purpose is to strike targets that are very far away, often in different continents. They are not primarily designed for shooting down airplanes (that's more of an anti - aircraft weapon's role), launching satellites (space launch vehicles are more specialized for that, although there are some similarities in technology), or detecting enemy troops at night (that's the job of surveillance and detection equipment like night - vision devices or radar for troops).

Answer:

strike targets far away.