The alien will be entering the second chamber soon.

Three small aliens enter and introduce themselves as the Shingouz.

A few other aliens also entered the mix.

The prehistoric aliens choose their roles and also enter history.

The Government contended the aliens had entered this country for economic reasons.

As the conflict ensues, the tiberium-based aliens known as the Scrin suddenly enter the war.

The invisible alien enters Max's trailer and abducts him.

For one thing, half the illegal aliens in this country entered legally, but overstayed their visas.

Still moving stiffly, the three aliens entered, the one who was apparently the leader pulling the door shut behind them and sealing it.

Many illegal aliens enter the U.S. across the Mexican border.