A helicopter flies near a merchant to assist frigates in seizing and arresting their target. A formation of frigates in the East China Sea Fleet completed a "seize and arrest" exercise at sea using live ammunition earlier this month. It was a sea-blockage drill.

A merchant is scouted by the frigates during the drill held earlier this month.

A surveyor measures the distance from the target during the drill held earlier this month.

(People's Daily April 13, 2007)