But the agent did not take fire at that jib.  Instead he pushed back a panel and they were looking into com-unit room where another man in the tunic of the I-S lounged on what was by law twenty-four hour duty, divided into three watches.

“These F-Ts want to flash a voucher request through,” their guide informed the tech.  The other, interested, gave them a searching once-over before he pushed a small scriber toward Rip.

“It’s all yours—­clear ether,” he reported.

Ali stood with his back to the wall and Dane still lingered in the portal.  Both of them fixed their attention on Rip’s left hand.  If he gave the agreed upon signal!  Their fingers were linked loosely in their belts only an inch or so from their sleep rods.

With his right hand Rip scooped up the scribbler while the Com-tech half turned to make adjustments to the controls, picking up a speaker to call the I-S headquarters.

Rip’s left index finger snapped across his thumb to form a circle.  Ali’s rod did not even leave his belt, it tilted up and the invisible deadening stream from it centered upon the seated tech.  At the same instant Dane shot at the agent who had guided them there.  The latter had time for a surprised grunt and his hand was at his blaster as he sagged to his knees and then relaxed on the floor.  The Tech slumped across the call board as if sleep had overtaken him at his post.

Rip crossed the room and snapped off the switch which opened the wire for broadcasting.  While Ali, with Dane’s help, quietly and effectively immobilized the Eysies with their own belts.

“There should be at least three men here,” Rip waited by the door.  “We have to get them all under control before we start work.”

However, the interior of the bubble, extending as it did on levels beneath the outer crust of the asteroid, was not an easy place to search.  An enemy, warned of the invasion, could easily keep ahead of the party from the Queen, spying on them at his leisure or preparing traps for them.  In the end, afraid of wasting time, they contented themselves with locking the doors of the corridor leading to the lower levels, making ready to raid the storeroom they had discovered during their search.

Emergency hydro supplies consisted mainly of algae which could be stored in tanks and hastily put to use—­as the plants now in the Queen took much longer to grow even under forcing methods.  Dane volunteered to remain inside the E-Stat and assemble the necessary containers at the air lock while the other two, having had more experience, went back to the spacer to strip the hydro and prepare to switch contents.

But, when Rip and Ali left, the younger Cargo-apprentice began to find the bubble a haunted place.  He took the sealed containers out of their storage racks, stood them on a small hand truck, and pushed them to the foot of the stairs, up which he then climbed carrying two of the cylinders at a time.