We need a spaceship and a crew to operate it.

Normally these two aircraft and their crews operate in separate worlds.

Both were very heavy weapons and usually required a crew of at least two to operate efficiently.

A crew of 1,027 operate the ship and provide for the passengers.

The crew supplements the work of the City and has been operating since January 2002.

This evening's memorial service aside, the crew was already operating under extremely high stress levels.

In January 1960 the crew operated the first winter weekend at camp.

A crew might also operate in certain geographical areas.

Once deployed, the system requires a crew of only three individuals to operate.

The crew operated around the clock in two 12-hour shifts.