Preposition: during

• operation: The Roco automatic storage facility has a capacity of 3000 pallets and is unmanned during normal operation.

Adjective complement with noun phrase

• leave: All the pieces running a single racket are machine-gunned to death leaving the racket unmanned.

Modifies a noun

• drone: Iraqi gunners have shot down unmanned Predator spy drones.

• spacecraft: It must be pretty lonely being an unmanned spacecraft.

• vehicle: This would have meant you would only need two unmanned vehicles launched every two years instead of three.

• aircraft: Iraq posses the capacity to use unmanned aircraft to attack the US.

• crossing: It beggars belief that such dangerous materials are trundling along our railways, passing through unmanned level crossings.

• submarine: This is a small unmanned submarine which is launched from the stern of the ship.

Modifying Another Word

• normally: Calder will operate using a normally unmanned platform which can be accessed by maintenance crews via helicopter.

• now: The level crossings are now unmanned, operated by train crews, and all the surplus track removed.

• effectively: Unmanned Aerial Vehicles are effectively unmanned planes, which are used in battle to take aerial photos and drop bombs on targets.

• generally: AS24 is the brand name used by Total on its, generally unmanned, dedicated fueling points for commercial vehicles.

Used with adjective complement

• leave: That means that ports of entry are often left unmanned.

• run: The machine has automatic disk setting and can run unmanned.