Assuming we can get this rig to fly, and assuming we can open the airlock, we've still got to escape the pirates.

As Zip, Mark, and Joe approached the airlock, the outer door opened.

Make it quick before they blow the airlock by force."

As air filled the airlock, the Starmen removed their helmets and tucked them under their arms.

" When the leader saw that there were people coming, he kicked the airlock savagely and aimed his weapon at the mechanism.

"The Captain's got a team replacing the huge airlock on the surface of the asteroid, and the temporary power supply packets are being reloaded on the ships.

Stepping in, he sealed the airlock and pulled out a small recorder.

The dome contained a small airlock leading to a ladder that descended about 15 feet into the asteroid.

The Starmen debarked from their ship, crossed the field and entered the airlock that led into the receiving area.