It seems that this type fanfic are lacking so here is my attempt but it's summary time:
As result of Operation Dark Winter, Directive 51 was signed in response to a possibility of a bioterror on the United States. Upon the Green Poison outbreak the...
Y/N thoughts: No wonder why I didn't encounter any Grimm on my way over here. Guess it isn't her day but hey I kinda don't blame her.
Y/N began firing activating one of his turrets. Bullets would make its way toward the Grimm with each making their target. Though no matter how many Grimm fell it seemed as if they kept on coming. Eventually Sarah would make it to his position with Y/N handing her some mags. The turret was holding them off but it'll eventually be overrun.
Y/N: You got to be kidding me. Okay here is the plan Hornet, we're gonna make our stand here. You're gonna lay out our flame turrets in the outer perimeter to set up a trap. You're gonna lay down covering fire while the drone covers me. I'm gonna draw the Grimm out to distract and use my chem launcher. Once all the Grimm make the point activate the turrets and they'll burn to a crisp. Got it Hornet? Well let's start.
Y/N and Sarah began the plan. While Sarah set up the turrets and drone; Y/N began drawing the attention of the Grimm firing at them along side the drone. With Sarah noticing this she began using her LMG to cover him against any Grimm that tried to attack from his flank.
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Y/N made it to the point and launch his chem launchers at the ground making his way to the cover.
Y/N (over comms): Activate the turrets now!
The flame turrets revved up to life. In conjunction with the chem launchers it seemed as if the forest was set ablaze. The horde seem to start thinning with Grimm dying left and right.
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Y/N POV The Grimm however just kept on coming with no end in sight. Y/N kept on firing but he suddenly saw at how his gun stopped firing. Reaching down for a mag he realized he was empty. Grimm began to encircle him each trying to hit him. Some actually scored some hits but were driven back as he pulled out Trespasser and Liberty and began firing. The shots connected with another Grimm falling. He ranned out of ammo once again and began pulling back with Sarah. Y/N suddenly felt a wave of his aura siphoned out and looking down he realized his mags were filled. He questionably looked, but he began firing again and throwing grenades to keep them at bay.
Y/N: Okay grab the relics while I cover you. We're making our way back toward Ozpin ASAP.
Waiting for Sarah I kept on spraying bullets. Thanks to the temple being in ruins it was harder that we originally thought. My training made its use as each opponent fell. As one mag fell empty I quickly switched mags and started firing once more. I made each shot count but at this rate I knew ammo was running low. In a span of ten minutes I used up the Liberator, Historian, and Trespasser and the Grimm started to clear. Liberty held one bullet left but I was saving that in case the worse were to happen. Then in the corner of my eye I saw what seem to be a Beowulf Alpha make its way toward Sarah. I knew she hasn't spotted it yet and I knew by the time she does it'll be too late.
Y/N: Ah those Grimm did a number on me. He says while his vision starts to cloud.
With his his hands shaking due to the blood loss he felt once again his aura drained. The last of it going to his last shell. Firing the bullet it hits the Alpha's head killing it instantly. Sarah looked at the creature and then at Y/N.
Sarah POV Looking at the creature I realized it was gonna kill me. I looked toward Y/N, he was running toward me. I was accepting my fate but then the Beowulf laid dead. I was puzzled why he didn't shoot at the Beowulf chasing him but realized that must of been his last bullet. Sure he could've taken it in hand to hand combat I'm sure but his wounds says he can't at the moment. The Beowulf was gaining ground, I was gonna fire but my gunned jammed and the Beowulf jumped at Y/N. I knew I couldn't pull out my secondary or sidearm in time. I thought this was gonna be the end but then it wasn't. A strange light covered the hit; realizing this is my chance I pulled out Crimson and fired both shots killing it. He made his way toward me staggering as blood was trailing behind him. I began using a medkit on Y/N.
Y/N: I thought that would be the end of me for a second, so do you have the relics?
Sarah: Yes but-
Sarah was gonna say something else but was cut off.
Y/N: Good we're make our way back to Ozpin. Look I know what happened, but this is not important now seeing the state we are in. We will discuss it later along with what happened.
Sarah nodding her head grabbed Y/N and began heading back towards Ozpin. Their trek back was a long one as Y/N put his arm over Sarah in order to support himself. With her freehand Sarah fired Mystic at any Grimm that tried to attack them.
Two hours later with Y/N and Sarah finally making their way
Sarah and Y/N finally made their way back to Ozpin. They saw Ozpin, Glynda, and a medical team at standby as the bullhead landed. Then suddenly Y/N suddenly fell to the ground.