The alien was trying to get back to the ship.

Were the aliens trying to keep him from being arrested?

"You mean, aliens are trying to take over the Earth?"

The aliens were trying to drive them back by the feeling in their minds.

The aliens can be heard inside the house and try to enter the basement.

More often they are hapless aliens trying to make their way north.

He wasn't sure what would happen or what the alien was trying to do.

And then static, as if the aliens were trying to respond, but couldn't.

I have heard about you aliens trying to obtain other people's land.

The aliens try to use global warming to make Earth more suitable to live in.