Do you understand the necessity of this project?

That information is unnecessary.

That information is completely unnecessary.

He thinks that war is a necessary evil.

Please execute this program.

He decided to put the plan into effect immediately.

He has a strong ability to get things done to make the project successful.

He has the right to execute that program.

We need to follow the decision of the executive committee.

My friend was chosen to be on the action committee for the school festival.