"Since I don't know any more about their system of conversion than you do, I can't tell you in detail what to do," Seaton was issuing final instructions. "But whatever you do, don't monkey with their primaries--shortening them would overload their liberators and blow this whole Solar System over into the next Galaxy. Take time to be dead sure that you've got the secondaries of their main converters, and slap a short circuit on as many of them as you can before they cut you off with a zone. You'll probably find a lot of liberator-converter sets on vessels of that size, but if you can kill the ones that feed the zone generators they're our meat." "You are much more familiar with such things than we are," Radnor remarked. "Would you not like to come along?" "I'll say I would, but I can't," Seaton replied instantly. "This isn't me at all, you know. But let's see--" "Oh, of course," Radnor apologized. "In working with you so long and so cordially I forgot for the moment that you are not here in person." "Nope, can't be done." Seaton frowned, still immersed in the hitherto unstudied problem of the reprojection of a projected image. "Need over two hundred thousand relays and--um--synchronization--neuro-muscular--not on this outfit. Wonder if it can be done at all? Have to look into it sometime--but excuse me, Radnor, I was thinking and got lost. Ready to go? I'll watch you on the plate here and be ready to offer advice--not that you'll need it. Shoot!" Radnor snapped on the power and he and his aid shot their projections into one of the opposing fortresses, Siblin and his associate going into the other. Through compartment after compartment of the immense structures the as yet invisible projections went, searching for the power rooms. They were not hard to find, extending as they did nearly the full length of the stupendous structures; vaulted caverns filled with linked pairs of mastodonic fabrications, the liberator-converters. Springing in graceful arcs from heavily insulated posts in the ends of one machine of each pair were five great bus-bars, which Radnor and Siblin recognized instantly as secondary leads from the converters--the gigantic mechanisms which, taking the raw intra-atomic energy from the liberators, converted it into a form in which it could be controlled and utilized. Neither Radnor nor Siblin had ever heard of five-phase energy of any kind, but those secondaries were unmistakable. Therefore all four images drove against the fivefold bars their perfectly conducting fields of force. Four converters shrieked wildly, trying to wrench themselves from their foundations; insulation smoked and burst wildly into yellow flame; the stubs of the bars grew white-hot and began to fuse; and in a matter of seconds a full half of each prodigious machine subsided to the floor, a semimolten, utterly useless mass. [Illustration: _They drove their fields of force against the fivefold bars._]