The police raided a large grow operation in the city.

The police raided several grow operations in the city.

Operational research is a field of study that uses advanced analytical methods to help make better decisions.

The government denied any involvement in the black operation.

The government conducted several black operations to gather intelligence.

Additive operations are essential in mathematics.

Understanding the orders of operations is crucial in solving complex mathematical problems.

The non-operational equipment needs to be repaired.

Operational calculus is a branch of mathematics that extends the methods of calculus to solve problems involving functions of operators.

The joint operations between the two countries were successful.