As soon as another plane penetrates that envelope, it appears on the first plane's monitor.

Asked if it showed that a plane could not penetrate a dome, he said, "We've been trying like heck to shoot down this rumor."

Sharks might have swum through the air, though it seemed improbable a plane could penetrate it.

The official Iraqi press agency said the planes, which it did not further identify, had penetrated Iraq to a depth of three miles.

Four planes penetrated two and a half miles into Pakistan, fired six rockets and dropped 12 bombs, it said.

The plane or bomb had also penetrated the forward assembly room causing assembled rockets to be propelled throughout the ship and the area surrounding it.

The plane penetrated deep into the peat when it crashed.

THE Internet, pervasive wherever planes land, is now penetrating higher altitudes as well.

On the morning of 2 April 1945, Japanese planes penetrated the harbor.

The plane of force struck and clung, but could not penetrate it.