The Fall.

Soon the caution lights wailed in tandem with the siren's sound through the speakers across the grounds. Jack Morrison put one foot before the other as he walked down the grand staircase into the lobby while his hands worked to slide the magazine into his pulse-rifle with a bitter-sweet click of completion.
Down the halls, as if an eternity away, he heard yells and calls of the Overwatch agents running from their rooms out the emergency exits and catwalks that clung like spider webs to the back and sides of the center building.
The overhead lights had been cut as the building's Omega Protocol but the power on a back-up generator, causing Jack's world around him to be painted by sporadic flashes of white, orange, and red.
"Please evacuate using the emergency exit systems. This is not a drill. Please eva…."
The monotone system spoke it's dialogue for the first time ever. In the close to three decades, Overwatch had never experienced an attack at home…until now.
Soon Morrison was standing on the marble of the Overwatch emblem in the entrance-way. Even with all the commotion, all he could focus on was the horrible silence in-between the alarm. The lull that would soon be filled by gunfire. A crack of sound, and the flooring kicked up inches from his heels in a flurry of shrapnel from one of Reyes' twin shotguns. Jack stumbled forward and spun, squeezing the trigger as the frantic lights around him blended into the fires from his muzzle, but Reyes was too fast for that. The soldier tumbled from the line of fire and came up on one knee- CRACK. CRACK.- firing one, then the other as Jack felt the heat and death pass by him so closely he could taste the powder.
5 shots in one, 4 in the other Morrison made a mental note as he squeezed off another burst, using the momentum to fly back into the connecting hallway.
"You keep missing me, Jack! Are you too weak to take a good shot? Or too old?" Gabriel questioned as he stood In the assault of lights over the now broken emblem at his feet where Morrison once stood.
Morrison said nothing, but took a knee and aimed down the sights.
"Please, Reyes. Please don't do this. There's another way." Jack knew he was wasting his words.
Gabriel popped his neck to the left, then to the right, and slowly began to walk onward to him. Jack's finger rested on the trigger like he was caressing a lover. He could see the darkness around his friend's eyes twitching with the anticipation of the shot. The kill. The rush.
Morrison fired, Reyes side-stepped. Fired again, no avail. Soon Gabriel was on him, feet from him, and the canons at his hands sounded off like artillery. Jack was quick, like a good soldier should be, and had managed to avoid the first burst which shattered and tore apart the wall and window behind him- but the other one left a mark. Jack's right arm was bare and bloodied now after the buckshot ripped through his old blue coat- he didn't want to give Reyes the satisfaction of a painful scream.
Morrison let go of his rifle long enough to grip the butt of it and jabbed his arms outwards into a biff that caught Reyes' at the jaw, and now his cream and blue pulse rifle found itself splattered with a dark camouflage of blood.
Gabriel stumbled back and fired again, catching Morrison at the knee. That time, he screamed.

4 shots. 2 shots. Jack counted through the pain. The old warrior jumped backwards and pointed his gun to the ceiling, firing off his trinity rockets to bring the floor above crashing down between himself and the foe.
Through the smoke and grit, Jack sprinted down the hallway into the grand dining hall, slamming It shut behind him, noticing his own sick trail of bloody boot-prints.
Morrison trained his gun at the grand doors and continued to retreat back to the towering glass windows at the end of the room where once, they had danced and lived in joy.
The door then shook from the twin gunshots, blowing a hole through where the beautiful golden handles once were.
3. 1.
"Come on, then!" Morrison screamed, firing one burst. Then another.
Silence.
"Face me!"
Gabriel sprinted through the doors, like a crazed hound. With each thunderous step, he would grab a chair to throw, and Morrison volleyed across a dining table to the other lane to fire- missing and missing until Gabriel had bounded up onto the table and- BOOM. BOOM.
2. Empty, Morrison course corrected himself during his dive to avoid the shots and finally popped off the last of his magazine tearing through Reyes' right knee. The man howled through the blood.

He was standing before him now, Morrison stopped limping long enough to stare him in the eye. His breath was heavy, both of theirs was. Two super-soldiers, crimson at their bruised lips. Exhaustion plaguing their muscular frames. Sweat rolling to blend with the red streaks across their faces.
Gabriel's pooled under the scar beneath his eye, and for a split second he look as if the blood took the form of a streak of tears.
Morrison, through a pant, dropped his heavy weapon to the ground and unclipped the biotic device from his vest and threw it to the ground between them. The field expanded, a warm golden hue illuminating the lightless hall as the dying sky outside whispered its last sunlight through the windows. The sun couldn't reach them though, not now, no. They were in darkness. In darkness except for the small expanse of light that struggled to heal them both.
Gabriel looked upon it, and then to Morrison. He held his shotgun out, facing from them, and popped off the last shot as it destroyed an ornate chair just feet away from them. It's fury echoing in the high walls.
The other shotgun, he gave a knowing look at, and then dropped them both at his feet. Not as a sign of truce or defeat, but as a symbol of their brotherhood.
They weren't going to shoot each other dead anymore. No. That would be too easy.
Gabriel stared at his own hands like the weapons they were, and then to the biotic device which flashed weakly with a final sort of gasp.
Morrison balled a fist and put it into his palm, cracking his joints.
Loading his own weapons for the battle ahead.
"Come on Jack, you gotta' learn to hit harder than that," A young Reyes had told him at Basic in another life. "I'm not always gonna' be able to put my ass on the line for you. Didn't they teach you to fight in whatever backwards farm you grew up in?"
Jack would always laugh, always give him a big grin.
Reyes moved then in a blur, his fist finding Jack's cheek, then his other busting his side and he felt a rib shatter. Gabriel was always the one with the strength, but Morrison…he had speed.

The two danced, then in darkness as the sunlight finally took its own life at the mountains.
The two danced, fists connecting and exchanging in a waltz that was as romantic as it was deadly. The blood of each now covering the other, and in the darkness their tears met as well. The skin at Gabriel's knuckles was rubbed raw with every blow, and soon his bare skin at his chest was now showing in the cover of the darkness as the two would grab and rip, punch and bleed. Kick and scream.
Gabriel hit Morrison for every-time he remembered Jack's love for Dr. Zeigler, and for every time he remembered his own passion for Ana. The deceased. The woman Jack had let die….he did let her die, didn't he?
Morrison felt that rage, that lust, and gave it back in turn. Both men no longer had skin, no longer had pain.
They were naked in their mutual agony and violence as the pummeling continued until they had both ended their dance at the stage. The stage where, years ago, Morrison had taken Gabriel's promotion from him.
Gabriel Reyes opened his mouth to speak, and shards of tooth dribbled out.
"You never loved her." He spoke, his voice hardly his own.
Morrison didn't ask which one. It didn't matter.
"Neither did you." Jack replied. The words hurt to say almost as much as they hurt to hear. More painful than the fists. Burying deeper than the bullets had.
Jack kicked Gabriel at his knee where he'd shot him earlier and the man screamed, collapsing on his back against the wood of the stage beneath them. Morrison was on him now, fingers wrapped at his neck.
Before he could speak, the ground rumbled violently beneath them. The whole world. The walls cried and soon the chandeliers at the ceiling…then there was no ceiling, and Morrison watched the sky crumble around them as his ears popped from a sound like the universe itself was giving birth to an atom bomb.