They could have destroyed the city, true; but it was not until after the non-combatant inhabitants had unobtrusively moved out that that course suggested itself as a desirability. Now the destruction of property would be a gesture worse than meaningless; it would be a waste of energy which would all too certainly be needed--badly and soon. Hence, as the Patrol's land forces ground clangorously into position the enemy made no demonstration. The mobile screens were in place, surrounding the doomed section with a wall of force to protect the rest of the city from the hellish energies so soon to be unleashed. The heavy caterpillars, mounting projectors quite comparable in size and power with the warships' own--weapons similar in purpose and function to the railway-carriage coast-defense guns of an earlier day--were likewise ready. Far back of the line, but still too close, as they were to discover later, heavily armored men crouched at their remote controls behind their shields; barriers both of hard-driven, immaterial fields of force and of solid, grounded, ultrarefrigerated walls of the most refractory materials possible of fabrication. In the sky hung the maulers, poised stolidly upon the towering pillars of flame erupting from their under jets. Cominoche, Bronseca's capital city, witnessed then what no one there present had ever expected to see; the warfare designed for the illimitable reaches of empty space being waged in the very heart of its business district! For Port Admiral Haynes had directed the investment of this minor stronghold almost as though it were a regulation base, and with good reason. He knew that from their coigns of vantage afar four separate Boskonian observers were looking on, charged with the responsibility of recording and reporting everything that transpired, and he wanted that report to be complete and conclusive. He wanted Boskone, whoever and wherever he might be, to know that when the Galactic Patrol started a thing, that thing it finished; that the mailed fist of civilization would not spare an enemy base simply because it was so located within one of humanity's cities that its destruction must inevitably result in severe property damage. Indeed, the chief of staff had massed there thrice the force necessary; specifically and purposely to drive that message home. At the word of command there flamed out, almost as one, a thousand lances of energy intolerable. Masonry, brickwork, steel, glass, and chromium trim disappeared; flaring away in sparkling, hissing vapor or cascading away in brilliantly mobile streams of fiery, corrosive liquid. Disappeared, revealing the unbearably incandescent surface of the Boskonian defensive screen. Full-driven, that barrier held, even against the titanic thrusts of the maulers above and of the heavy defense guns below. Energy rebounded in scintillating torrents, shot off in blinding streamers, released itself in bolts of lightning hurling themselves frantically to ground.