The military has undoubtedly performed intensive aerial surveillance of the area, but apparently has not released any information about lost ships.

Nancy's assignment to is to perform surveillance on him, and she never gets to talk to him.

Console operators perform surveillance, identification, weapons control, battle management and communications functions.

The Taiwan police system at that time only played as a supportive role, like performing frequent surveillance, for example.

He claimed that he signed up to make it easier for you to perform surveillance on him.

Its primary function is to perform airborne surveillance and early warning.

Perform undercover work and surveillance using a variety of equipment to collect and document evidence.

It was not difficult to perform surveillance on her.

They have also performed extensive surveillance on social networks such as Myspace.

Other companies have been established to perform such surveillance.