Wei Qing recognized the odds against him and quickly took defensive countermeasures.

Flares are used for signalling, illumination, or defensive countermeasures in civilian and military applications.

A special variety of flare is used in military aircraft as a defensive countermeasure against heat-seeking missiles.

Eyes on screens for defensive countermeasures.

On launch, the missile records the target's image profile and is able to ignore defensive countermeasures such as flares.

"The proximity charge was a defensive countermeasure," Sisko said.

It is impossible to attack all objectives simultaneously, and the lapse of time of a few minutes would evoke defensive countermeasures.

The system was created as a defensive countermeasure to the rocket threat against Israel's civilian population on its northern and southern borders.

The result was a programme called Chevaline that added multiple decoys, chaff, and other defensive countermeasures.

The rapid-frequency nadion-pulse cannon was first proposed in 2366, as a possible defensive countermeasure against the Borg.