But he took a step back, and the door hissed shut.

As the door hissed closed behind him, he spoke into the air.

As he did the engines finally cut out and the door at the front hissed open.

The door we'd come up through was not hissing closed either, so he hadn't used it.

And then the door to the captain's ready room hissed open.

She turned, took a step and the doors hissed closed behind her.

As the door hissed back, the cold night air hit them.

The door hissed open, and Silence led the way in.

The door hissed open, and in the three came again.

He did not look around as the door behind him hissed open and closed.