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 (usually thousands of kilometers). They are not primarily used for shooting down airplanes (air - to - air missiles or anti - aircraft systems are more relevant for that), launching satellites (space launch vehicles are designed for satellite deployment, although there are some similarities in technology but different purposes), or detecting enemy troops at night (sensors like night - vision devices or radar for troop detection).

Answer:

strike targets far away.