"How many?"
"Two," Kerim said. "I think they're only two. They keep crossing back and forth in front of us." She laughed nervously. "It's idiotic, of course, but I do get the feeling they're looking at us."
Gefty said hesitantly, "Everything's set but I need another minute or two to get this last connection whittled down a little more. If I blow the charge too soon, it mightn't take the gadget clean out of the ship."
Kerim said, "I know. I'll just watch ... they just disappeared again." Her voice changed. "Now there's something else."
"What's that?"
"You know you said to watch the cargo lock lights on the emergency panel."
"Yes."
"The outer lock door has just been opened."
"What!"
"It must have been. The light started blinking red just now as I was looking at it."