As a social species, human beings need many and varied interaction experiences from birth to learn vital communication skills.

The soldiers provided signal services and filled a vital communication gap that existed in that theater.

The failure of any vital communication could cost the bank large sums in interest charged by the central bank.

Tropical cyclones often knock out power to tens or hundreds of thousands of people, preventing vital communication and hampering rescue efforts.

Our vital communications network will effectively be in the hands of our enemy.