1.  Even sophisticated planes sometimes leave the radar screen, though, most commonly by dropping below monitoring level or when flying between mountains.

2.  Committing sophisticated AWACS surveillance planes to Korea is one of the ways, he said.

3.  Committing sophisticated AWACS surveillance planes to Korea is one of the ways, the defense ministry spokesman said.

4.  Committing sophisticated AWACS surveillance planes to Korea is one of the ways to improve security, a South Korean defense ministry official said on Monday.

5.  The screts leaked to the arms dealers allegedly included plans to purchase guided missiles, sophisticated planes and radar systems from foreign contractors, they said.

6.  The secrets leaked to Ratcliffe and other arms dealers allegedly included plans to purchase guided missiles, sophisticated planes and radar systems from foreign contractors, security officers said.

7.  Last December, the government agreed to make available sophisticated Tornado fighter planes, as well as transporter planes, motor torpedo boats and a field hospital.

8.  Secrets leaked to arms dealers included plans to purchase guided missiles, sophisticated planes with sensitive devices and radar systems from foreign contractors, the Moonhwa newspaper said.

9.  Secrets leaked to the arms dealers allegedly included plans to purchase guided missiles, sophisticated planes and radar systems from foreign contractors, they said.