gwen and mark were once again in bed together kissing.

but suddenly mark wanted to stand up but gwen hold him back.

"no." gwen says kissing him again.

"you're gonna make us late." mark states between the kisses.

"ok. ok. go." gwen says letting go of him.

when mark really wanted to stand up gwen hold him back again.

"if you really want it that bad." mark smirks kissing her again.

as gwen straddled him they heard a knock on the door.

"guys, come on. we are going to be late." they heard callie yelling.

"seems like we have to continue this later." gwen pouts standing up from her husband.

"you always have to stop when it's going great." mark sighs standing up us well putting on some boxers and a shirt.

as the couple was full dressed they stepped together with callie out of the door to see arizona sitting next to the door.

arizona got home yesterday, callie told them. and it seems like she sat there all night.

"you sat here all night?" callie asks the blond who sat on the floor with a cup of coffee in her hands while gwen and mark watched them silent.

"um... well, no." arizona replies standing up. "just flew in from africa, so i went to a hotel and took a shower, get some sleep, and came back really early."

"really, please, go back to malawi." callie says before walking away with the couple leaving arizona alone.

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the whole hospital stood in front of the tv watching the news.

"we have reports that a gunman has opened fire on students and faculty. we now take you live to our on scene reporter." the news reporter said over the tv.

gwen stood next to mark his hand on the small of her back.

"students and faculty are still in the building. i'm trying to get answers, but what we know so far is that a gunman opened fire at pacific college, and that there are at least a dozen... i'm sorry? okay. there at least 20 victims." the live reporter informed them in the news.

then all the doctors start to walk away prepping for the incoming victims.

"you can sit this out, gwen." mark whispers to his wife as they walked to the ambulance.

"i'm fine. don't worry about me." gwen assures him. "they need all hands and i'm the only cardio attending."

"it's just... if you don't feel well, then stop. please, promise me that you don't push yourself." mark begs grabbing some gloves.

"i promise, okay. i'm fine." gwen says kissing him.

then the two walked to the ambulance bay.

"there are 15 ambulances on the way, maybe more to come. first one is three minutes out." owen informs them as the doctors stand in the ambulance bay.

"people, people. our own trauma is fresh and we are gonna have feelings today, and there's no shame in that." webber told them. "what i want to say is what we went through six months ago, they are going through right now. wich makes them our brothers and sisters. wich makes them fellow travelers. wich makes them our own. so, to the very best of our ability, we are gonna do our work first, and you're gonna have your feelings later."

"grey?" gwen asks lexie who was sobbing hard.

"i'm fine." the redhead assures. "i'm fine!"

"go to the pit and make sure we're stocked and call the blood bank." gwen instructs her softly.

"i'm fine." lexie repeats still fighting her tears.

"call the blood bank. tell them to give us all the o neg they have." gwen repeats this time lexie gave in and walked back into the hospital.

gwen knew how disturbing for lexie it was to find gwen in her own blood. gwen owed lexie her life so she tries everything today to help lexie.

the first patient got webber and kepner.

the second one went to derek and meredith.

"you're okay?" derek asks his sister as he brushed past her.

"nothing about this is okay." gwen replies walking over to owen and their patient.

"jared swork, 20 years old, single entrance wound to the left fifth intercostal space, no exit wound." the paramedic explains owen and gwen. "lost vitals in front of us. this is the emergency thoracotomy we called in about."

"you did a thoracotomy in the field?" owen asks the paramedic.

"no, i didn't." the paramedic shoke his head as the ambulance doors open.

the two attendings looked up to see cristina in the ambulance with a hand in the patients chest.

"i had to crack his chest." cristina tells them.

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"can you feel the lesion?" gwen asks cristina as they wheeled the patient to the elevator.

"yes, he's got a big hole in his right ventricle. but as long as i keep my hand here, i can feel a good heartbeat." cristina replies.

"cristina!" owen calls his wife as he ran behind the two woman.

"what? what?" cristina asks turning to him.

"you're going to the o.r?" owen reminds her.

"she's got her hand on the hole, owen." gwen says.

"i'll be fine. i'll be okay." cristina assures her husband.

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gwen stood with cristina in the o.r get gowned when jackson entered.

"you paged me? yang?" jackson furrows his brows as he spotted the dark haired woman.

"she was at the scene." gwen said in the same time cristina said "i was at the scene."

"he's got a tear on the right ventricle and there could be torrential bleeding once we get in." gwen explains jackson. "so i just, uh, want a little backup. just a little extra backup."

then gwen walked around the table to stand opposite from yang.

"she's not sure if i can handle it." cristina corrects making gwen rolling her eyes.

"i'm ready. i'm in. i'll go scrub." jackson nods walking into the scrub room.

"all right. let's get this boy on bypass." gwen announces.

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gwen was operating on the patient with cristina and jackson when webber walked into the o.r.

"dr.shepherd, we have a gsw to the chest." he informed her when his eyes landed on cristina. "dr.yang?"

"dr.yang was on the scene." gwen explains the chief. "she performed an emergency thoracotomy in the field."

"you all right, dr.yang?" webber asks the resident.

"yes, sir." cristina nods from where she stands next to gwen. "i'm staying, if that's okay."

"dr.yang, can you tell me what your patient was wearing, or where his clothes are?" webber asks her more serious.

"uh, they were cut off at the scene. it was, um... a green hoodie, jeans." cristina shrugs.

"is he a redhead, about 20?" webber asks again in a serious tone making gwen look at him.

"yes." cristina answered.

"uh, why, sir?" jackson asked with furrowed brows.

"send me down any bullet fragments you pull out of his body." webber instructs.

"chief, what's going on?" gwen asks.

"the patient is the shooter." webber blurts making gwen froze for a minute. "send down any bullets immediatly. they're evidence."

then webber left the room leaving everyone silent.

gwen squeezed her eyes close thinking about the moment the bullet killed her baby. the sound of the gun. the pain she had felt.

tears brim in her eyes but she blinked them away.

"okay, where were we?" gwen cleared her throat.

"you were about to reconstruct the ventricle." cristina replies.

"right. right, thank you. okay." gwen let out a breath. "hand me three-oh, ethibond, please."

gwen hold out her hand to the nurse waiting for the ethibond but the nurse refuses to give it to her.

"i'm sorry. i'm sorry, but i can't, dr.shepherd." the nurse shoke her head.

"you can't hand me the ethibond?" gwen raises a brow still holding out her hand.

"i can't..." the nurse repeats.

"she can't save this guy is what she's saying. he just shot up dozens of people! and this surgery is gonna take all day." jackson says in a loud voice.

"dr.avery..." gwen tries to calm him.

"that's taking three doctors and four nurses away from helping other people. people who didn't shoot up a campus full of innocent kids!" jackson continues still in a loud voice.

"dr.avery!" gwen shouts making him silent. "there are doctors who operated on iraqi soldiers who blew up dozens of our guys. they didn't like it, but they did it, because they are doctors and they took on oath. the same as me and you. you're not a jury or a judge. i there's a life to be saved, we save that life regardless-"

"i'm not doing this. no." jackson interjects stepping away from the table.

"anyone else?" gwen asks looking around the o.r.

"i'm sorry." the nurse said stepping away as well, followed by many staff members.

"dr.yang, are you staying?" gwen looked at her.

cristina thought for minute before she answered "yes."

"all right." gwen nods. "okay, great. uh, three-oh ethibond, please."

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mark stood in the e.r busy with patient when he saw avery walking up to him.

"avery, is my wife done yet?" mark asks the resident.

"no. and while we've got a cop bleeding out down here, she's occupying a perfectly good o.r, going extreme measures to save the damn shooter." jackson replies annoyed. "i tried talking to her..."

"gwen's guy is the shooter? so she knows that he is the shooter?" mark asked worried.

"yeah, she does! i walked out." jackson explains.

"all right." mark nods walking away from avery.

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mark walked into the o.r making gwen and cristina looking at him.

"what is it, mark?" gwen asks looking back down at the patient.

"i just wanted to see how you're doing." mark replies.

"i'm fine. i promise. go help other people." gwen assures him smiling under mask.

he looked her deep in the eyes as she nods once again.

"okay." mark nods leaving again.

gwen took a deep breath trying to supress the memories of that one day.

"thank you for staying today, cristina." gwen blurts making her look at the attending. "i know it can't have been an easy decision."

"you know what, though? it was." cristina tells her.

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after a while the whole gallery was full watching gwen and cristina operating on the shooter.

"i just took my kid to a room. he was the last one." owen informs the doctors in the gallery.

"besides this one." webber point to the o.r.

"mm-hm. yeah, besides this one." owen nods.

"thirty-seven degrees." cristina informs gwen.

"should be any minute now." gwen says waiting for the heart to beat again.

then the monitors beeped again.

gwen nods to owen to show him that the patient is fine.

"we saw 26 patients. 26 victims. and we had no casualties. no one died." richard says making lexie and april cry while the other grieved silent.

then suddenly derek and meredith started to laugh as everyone chimed in.

"i hate this place." stark spats leaving the gallery making the others laugh only more.

"i was holding a grudge. i can hire you back." webber tolds arizona as he stood up. "but you're gonna have to work under stark."

then richard leaves as the other began to laugh again. except arizona who stood silent.

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after her long surgery gwen searched for mark who she found in a patients room suturing a patient.

she walked into the room peering over his shoulder.

"hey." gwen greets her husband.

"hey." he greets her back. "she's, uh, still sedated. and she's just a kid. she shouldn't have a big ugly scar. do you mind waiting? i'll be about another hour."

"i love you. so, yeah... take your time. i'll wait." gwen says making him smile. "and thank you for being there today. i couldn't do all this without you."

mark turned his head to kiss her.

"i love you too." mark smiles. "so, you'll waiting?"

"yeah, i have something to do anyways. i'll just wait in the lobby." gwen says kissing him one last time.

then she left the room leaving mark with a huge smile on his face.

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"lexie!" gwen calls the resident who was walking out of the lobby.

"yeah? do you need something, dr.shepherd?" she asks turning around.

"no. i just wanted to say thank you." gwen says.

"for what?" lexie furrows her brows.

"for saving me. if you hadn't found me that day. i'll probably be dead. so, thank you." gwen thanks her.

"you don't have to thank me." lexie assures her with a soft smile.

"it was long overdue, lexie. you saved my life. i owe you something. if you need help just ask me." gwen tells her. "i know it must be hard for you to see me like this. so, i also want to apologize to you."

"you have nothing to apologize about. it wasn't your fault you got shot." lexie says.

"still, you had a very hard time after it and i should've been there for you." gwen says.

"it's okay. really, dr.shepherd. i'm fine now." lexie assures her.

then lexie started to walk away leaving gwen alone until mark picked her up.

"that was a hard day for me but i stayed strong and i am damn proud about that." gwen smiles at mark who put his arm around her.

"you can, my love." mark smiles back. "what was that with lexie?"

"i just thanked her for saving me. if she hadn't found me that day i'd probably be dead." gwen said making mark froze for a second. "but i'm not and that's why i was thaking her."