“Then God help you,” the AI replied gravely, “because if your plan fails, no one else will have the power to do so.”

The compartment, a space untouched by the fighting, had once served as a ready room for the ship’s Longsword, Pelican, and shuttle pilots. Now, with no modifications other than the installation of some crude sleeping accommodations, a back table with some food on it, and crates of supplies, the room functioned as an unofficial HQ for Covenant forces stationed aboard the Pillar of Autumn .

The command staff, or what was left of it, sat slumped in the uncomfortably alien chairs, many too tired to move, and stared up at their leader. His name was ’Ontomee, and he was confused, frustrated, and secretly frightened. The situation aboard the Autumn had deteriorated dramatically. In spite of all the efforts to stop them, Flood forms continued to trickle into the ship.

The disgusting filth had even managed to seize control of the ship’s engineering spaces before a new enemy, one which was inimical to Covenant and Flood form alike, sent an army of flying robots into the ship and took control of the Engine Room.

Now, as if to prove that ’Ontomee was truly cursed, still another threat had arrived on the scene, and he was reluctant to share the news with the already exhausted Elites arrayed in front of him.

“So,” ’Ontomee began lamely, “it seems that a human crashed a Banshee into the side of the ship, and is now on board.”

A veteran named ’Kasamee frowned. “ ‘ A human’? As in, a single human?

With respect, Excellency, one human more or less will hardly make a difference.”

’Ontomee swallowed. “Yes, well, normally I would agree with you, except that this human is somewhat unusual. First, because he wears special armor, second, because it appears that he’s on some sort of mission, and third, because he singlehandedly killed every member of Security Team Three, which had responsibility for the command and control deck.”

Unnoticed by those in front of him, the seemingly lethargic officer known as Huki ’Umamee started to look interested. He sat up straighter, and began to pay close attention. Having chosen a seat in the last row, ’Zamamee found it difficult to hear. The discussion continued.

“One human accomplished all that?” ’Kasamee demanded incredulously.

“That hardly seems possible.”

“Yes,” ’Ontomee agreed, “but he did. Not only that, but having accomplished whatever he entered the control area to do, he left, and is somewhere else on board this ship.” The Elite scanned the faces in front of him. “Who has the skill and courage required to find the alien and kill him?”

The response came with gratifying speed. “I do,” ’Zamamee said, now on his feet.

’Ontomee peered into the harsh human lights. “Who is that?”

“ ’Umamee,” the Elite lied.

“Ah, yes,” ’Ontomee replied gratefully. “A commando . . . Just the sort of person we need to rid ourselves of this two-legged vermin. The mission is yours. Keep me informed.

“Now, turning our attention to these new airborne mechanisms . . .”

Later, as the meeting ended, ’Kasamee went looking for the volunteer, fully intending to compliment the younger officer on his initiative. But, like the human the Elite was supposed to find, the Elite officer had disappeared.

Having fought his way clear of the bridge, the Master Chief made his way through a series of passageways, ran into more Flood and gunned them down. Cortana figured that they could access the Engine Room via the cryo chamber, and that was where the Chief was headed. The problem was that he kept running into jammed hatches, locked doors, and other obstacles that kept him from taking a direct route.

After he moved through a large, dark room strewn with weapons, the Chief heard the sounds of combat coming from the area beyond a closed hatch. He paused, heard the noises die away, and slipped out into the corridor. Bodies lay all about as he slid along a bulkhead, saw some spikes sticking up over a cargo module, and felt his blood run cold. A Hunter! Or more accurately two Hunters, since they traveled in pairs.

Lacking a rocket launcher, the Chief turned to the only heavy-duty fire power that he had: grenades.

He threw two grenades in quick succession, saw the spined behemoth go down, and heard a roar of outrage as the second Hunter charged.

The Spartan fired just to slow the alien down, backed through the hatch, and gave thanks as the door closed. That gave him two or three seconds that he needed to plant his feet, pull another grenade, and prepare to throw it.

The hatch opened, the fragmentation grenade flew straight and true, and the explosion knocked the beast off its feet. The deck shook as the body hit. The Hunter attempted to rise but fell under a hail of armor-piercing bullets.

The Master Chief gave the corpse a wide berth as he left the room, and passed back into the hall. As he made his way through the ship’s corridors, he saw blood-splattered bulkheads, bodies sprawled in every imaginable posture of death, blown hatches, sparks flying out of junction boxes, and a series of small fires, which thanks to a lack of combustible materials seemed to be fairly well contained.

He heard the sound of automatic weapons’ fire somewhere ahead, and passed through another hatch. Inside, a fire burned at the point where two large pipes traversed a maintenance bay. He was close to the cryo chamber, or thought he was, but needed to find a way in.

Hesitant to jump through the flames unless it was absolutely necessary, he took a right turn instead. The sounds of combat grew louder as the hatch opened onto a large room where a full array of Flood forms were battling a clutch of Sentinels. He paused, shouldered his weapon, and fired. Sentinels crashed, carrier forms exploded, and everyone fired at one another in a mad melee of crisscrossing energy beams, 7.62mm projectiles, and exploding needles.

Once the robots had been put out of action, and most of the Flood had been neutralized, the Chief was able to cross the middle of the room, climb a ladder, and gain the catwalk above. From that vantage point he could look across into the Maintenance Control Room, where a couple of Sentinels were hard at work trying to zap a group of Flood, none of whom were willing to be toasted without putting up a fight. The combatants were too busy to worry about stray humans, however, and the noncom took advantage of that to work his way down the walkway and into the Control Room.

And that , as he soon learned, was a big mistake.

It wasn’t too bad at first, or didn’t seem to be, as he destroyed both of the Sentinels, and went to work on the Flood. But every time he put one form down, it seemed as if two more arrived to take its place, soon forcing him onto the defensive.

He retreated into the antechamber adjacent to the Control Room. The human had little choice but to place his back against a locked hatch. The larger forms came in twos and threes—while the infection forms came in swarms.

Some of the assaults seemed to be random, but many appeared to be coordinated as one, or two, or three combat forms would hurl themselves forward, die under the assault weapon’s thundering fire, and fall just as the Spartan ran out of ammo, and more carrier forms waddled into the fray.

He slung his AR, drew the shotgun—briefly hoping there would be a lull during which to reload—and opened fire on the bloated monstrosities before the force exerted by their exploding bodies could do him harm.

Then, with newly spawned infection forms flying in every direction it was clean-up time followed by a desperate effort to reload both weapons before the next wave of creatures attempted to roll over him.

He dropped into a pattern of fire and movement. He made his way through the ship, closer to the engineering spaces, pausing only to pour fire into knots of targets of opportunity. Then, he quickly disengaged, reloaded, and ran farther into the ship.

The noise generated by his own weapons hammered at the Master Chief’s ears, the thick gagging odor of Flood blood clogged his throat, and his mind eventually grew numb from all the killing.

After dispatching a Covenant combat team, he crouched behind a support strut and fed rounds into the shotgun. Without warning, a combat form leaped on his back and smashed a large wrench into his helmet. His shield dropped away from the force of the blow, which allowed an infection form to land on his visor.

Even as he staggered under the impact, and pawed at the form’s slick body, a penetrator punched its way through his neck seal, located his bare skin, and sliced it open.

The Spartan gave a cry of pain, felt the tentacle slide down toward his spine, and knew it was over.

Though unable to pick up a weapon and kill the infection form directly, Cortana had other resources, and rushed to use them. Careful not to drain too much power, the AI diverted some energy away from the MJOLNIR armor, and made use of it to create an electrical discharge. The infection form started to vibrate as the electricity coursed through it. The Chief jerked as the Flood form’s penetrator delivered a shock to his nervous system, and the pod popped, misting the Spartan’s visor with green blood spray.

The Chief could see well enough to fight, however, and did so, killing the wrench-wielding combat form with a burst of bullets.

“Sorry about that,” Cortana said, as the Spartan cleared the area around him, “but I couldn’t think of anything else to do.”

“You did fine,” he replied, pausing to reload. “That was close.”

Another two or three minutes passed before the Flood gave up and he could take the moment necessary to remove his helmet, jerk the penetrator out from under his skin, and slap a self-adhering antiseptic battle dressing over the wound. It hurt like hell: The Spartan winced as he lowered the helmet back over his head, and sealed his suit.

Then, pausing only to kill a couple of stray infection forms, and still looking for a way to gain entry to the cryo chamber, the Chief made his way through a number of passageways, into a maze of maintenance tunnels, and out into a corridor where he spotted a red arrow on the deck along with the wordENGINEERING .

Finally, a break.

No longer concerned with finding a way into cryo, the noncom passed through a hatch and entered the first passageway he’d seen that was well lit, free of bloodstains, and not littered with corpses. A series of turns brought him to a hatch.

“Engine Room located,” Cortana announced. “We’re here.”

The Spartan heard humming, and knew that 343 Guilty Spark was somewhere in the vicinity. He had already started to back through the hatch when Cortana said, “Alert! The Monitor has disabled all command access.

We can’t restart the countdown. The only remaining option will be to detonate the ship’s fusion reactors. That should do enough damage to destroy Halo.

“Don’t worry . . . I have access to all of the reactor schematics and procedures. I’ll walk you through it. First we need to pull back the exhaust coupling. That will expose a shaft that leads to the primary fusion drive core.”