His whole world collapsed as soon as he faced his brother on the gurney that was rushed to an ER room. "Jay?" He questioned as he approached his awake brother who was trying to get off.

"I am fine, Will." He insisted sitting up despite the efforts of Dr. Choi and Nat to pull him down. "I am fine."

"What happened to you?" Will asked having already started examining the bruise on his brother's chest and the blood on his side. "This is not fine."

"He was shot back at the scene, Dr. Halstead." Nat announced getting a glare from the injured man. "Fortunately the bullet did not go through but he still needs to be checked out."

Will lost it for a sec. Just the thought of his little brother on the ground, bleeding, made him sick. He took a deep breath and spoke up. "Jay, is this true?" It was a rhetorical question but still he needed to ask.

"It's true but I am okay and ready to go home." Jay announced attempting to get up from the gurney.

"I'll decide when it's time for you to return home. Lie down and let us do our job. NOW." He hated the fact that he yelled at his brother but it worked. He knew Jay was depressed because of their father's death and the shooting was probably a consequence of that depression.

He pulled Jay back down and moved him on a bed with the help of Choi and Natalie. "I need an IV line please and connect him to the monitor." He demanded when Jay tried to sit up again. "I said, stay down or you'll make me tie you in here."

Soon the younger Halstead was checked and released. Fortunately, there were no internal injuries so Jay would be fine in one to three days.

As soon as the doctor's shift ended, the two brothers exited the hospital walking to Will's car, getting inside.

"We need to talk." Will announced before he started the car.

"There is nothing to talk about. Let's just go home."

"No we won't." He shouted again. "First, you have to tell me what is wrong with you. Disobeying orders? Going after a criminal all alone? Getting shot?"

"Who told you about this?"

"The people who brought Daniel in. However, they did not tell me it was you. Do you have any idea how Ι felt when I saw you on the ER? Just talk to me, brother. Why did you risk your life for a man that beat the hell out of you?"

The cop didn't answer. He lowered his head staring down at his side where a gauze was wrapped around his waist under his black T-shirt.

Will did not talk either. He started the car and drove off to his apartment.

The two people inserted the house with the older Halstead walking towards the desk that was in the living room, sitting down in front of the computer so he could forget the previous events while Jay walked inside his room, his hand touching his wound, throwing the jacket on the chair next to the bed. He leaned in front of the mirror for a minute looking at himself, at his tired but bright green eyes and then he opened the drawer grabbing some photos. He cried hard looking at them, he could not keep his emotions inside him anymore.

"Jay do you want to eat something?" His brother asked deciding to break the silence between them but received no answer. "Come on bro, we won't be like this forever." He stood up and walked towards the bedroom thinking that he needed to apologize to his brother for his attitude.
"Jay... I..." He froze. His heart rate, his breathing, his blood circulation stopped for a minute. His brother was on the floor, unconscious. He quickly kneeled down to him, checking his pulse when he realized there wasn't one. "No, no, no." He murmured to himself starting immediately compressions to his brother's chest. "1,2,3,4,5…29,30. Come on Jay, don't leave me." He gave him two insulations and then again he went back to the compressions. "This is Dr. Halstead I need an ambulance in …" He explained while still performing CPR. "Come on Jay, come on." Nothing. He did again and again until he managed to bring him back. The door knocked. He left his brother for a second and opened it only to face Sylvie and Jessica rushing in holding a gurney.

"Where is he?" The latter asked.

"In the bedroom. I managed to bring him back but I did not have the right equipment to control his vitals." Will announced panicked not knowing what to do for the first time in his life, like he never made it to Medical School, like he never treated a patient.

"He is breathing." Brett announced placing an oxygen mask to his face. "What happened?"

"I don't know. He was fine when I brought him earlier, well he was in pain but he could stand and walk by himself. From what I can figure out there is an internal bleeding somewhere but I don't understand, there were no signs of a hypogemic shock." Will punched the wall next to him and cursed.

The two women placed the man gently on the gurney and carried him away being followed by the young doctor.

Will watched his brother crashing another two times inside the ambulance and could not help it but cry, cry a baby who desperately needed his mother. He watched as the other paramedics hooked him to a temporary vent and checked his vitals every five minutes.

"Dr. Halstead are you alright?" He heard his name being called once or twice and realized his eyes were closed the whole time. He couldn't stand looking at his only family in such condition. He nodded, he was too exhausted for words at the moment. He looked outside from the small window of the ambulance. Lots of doctors and nurses had gathered in the emergency exit waiting for their new patient. No one had no idea of who was until they all meet up with Will's swollen red eyes. He walked inside following the stretcher without talking to anyone.

"Update me, Brett." Choi said.

"Vitals not stable, we lost him twice, no obvious injuries."

"You are not coming in." Choi announced leaving Will strand.

"What? I am a doctor; I have every right to be in there." He pushed him a little on the wall.

"Not when it comes to your brother. Go to the waiting room and sit there like every other one of the family members.

Ethan walked away leaving a furious Will staring at him with a desperate look. He marched all the way outside ER and sat there on a blue hospital chair next to a man and a woman.

An hour passed with Will still in the same position with his arms and legs crossed. He was staring at the blank space in front of him when a figure made its appearance in front of him. He looked up only to see Dr. Rhodes standing there ready to speak. Immediately he jumped of the seat and shook the doctor's arms a little. "How is he?" He asked.

"There is something you should know, let's go outside for a minute."

Will's heart dropped to his feet. For a moment, he thought he lost his brother and wanted to cry but nothing was certain yet.

The two men exited the hospital walking to a remoted area where anyone could hear them talking.

"What is going on, Connor? Why did you bring me here? Did he die?"

"No he didn't. He suffered internal bleeding on his left kidney and colon which was never diagnosed on the CT when he came here earlier. He is in the OR now."

"What do you mean it wasn't diagnosed? I was the one who examined him. I could not have missed it, Jay seemed perfectly fine."

"I am sorry but you did."

"There is no way, I've never made a mistake on a patient." He kicked two small rocks in front of him. "I… I…" He couldn't find the right words to say, he was confused and panicked at the same time. He knew himself very well, he would never make such mistake, especially to his brother. "No, no ..." The tears had started streaming down his cheeks right now, hot tears that could not keep anymore. "I need to get into the OR." Will walked but he was pushed gently by Connor.

"It's not a good idea, the only thing you can do right now is waiting."

Dr. Rhodes beeper went off. "I have to go, it's emergency." He ran inside leaving the young doctor alone.

Will supported his body on the wall, thinking. The hot tears in his eyes were still there. "Will?" He heard a male voice calling his name but didn't bother to look. "Hey, it's gonna be fine."

"It's not. My brother is dying in there and it's all my fault."

"It is not your fault, Will, come on let's go somewhere quiet so we can talk."

"No…" The doctor took a peak of the person standing next to him. "Daniel, I am sorry but I have to be with my brother now, I don't have time for your educational/comforting conversations. He walked away without saying another word aiming for the waiting room near the OR.

No one else from his team was there. Maybe they didn't know. But no one else was when he was transferred at Med in the first place. Did everyone stop caring about him? Where were his friends? God, he didn't know if he had anyone in his life, he was too preoccupied with Natalie and Owen. He looked around to the families of the other patients. There were three or four people in each family, others crying, others sitting there staring at the blank space, others talking. He was alone though, he had just lost his father, his mother was dead in years, there was not anyone to comfort him, to calm him down, to reassure him that his brother would pull through.
"Hey." He heard a voice close to him.

"Connor…" He whispered in an exhausted, sad tone of his voice.

"We managed to stop the bleeding in both colon and kidney."

"Is he stable?"

"He is, although he is going to be in the ICU for a while and his recovery will last long but he should be alright, given the circumstances."

Will knew exactly what Rhodes meant. His mistake almost sent his brother to death. "I checked it twice, you know. The CT." He was on the verge on tears.

"Look at me. We are not robots, we are humans. We make mistakes."

"Not when it comes to our family."

Connor left him stranded by hugging him tightly, not letting him go. "I will do everything to keep him alive, even if that means working all day on him." He whispered. "Come on, let's pay him a visit."

The two men left the waiting room and marched all way to the ICU. It was not an unknown way for none of them as both walked that path everyday but this time was not the same. Jay was laid on the bed still surrounded by various machines and a vent in order to breathe properly. Will gasped at his brother's sight but tried to remain calm as he walked closer to him. His eyes were closed. His face was pale. His chest was wrapped with gauzes. The doctor could not keep his temper and tears anymore so he got out of the room and to the elevator.

"Hey, hey don't do anything stupid." Connor yelled following him.

He did not reply.

They both burst in, Connor grabbing Will's arms. "Don't you dare. He needs you. If you die too, he will not last for long."

Will still didn't talk. He escaped from the grip and sat down on the floor. "I can't lose him… I can't…"

The other man gave a sympathetic smile. "You won't, you won't."

He didn't know what it was. It must have been early in the morning when he came to cause everything was quiet and there was a little light in the dark waiting room. He noticed two other people in there, a man and a woman both sleeping before getting up from the chairs stretching himself.

"Dr. Halstead we have an incoming." Someone told him.

He was ready to run but stopped when he realized why he was in the waiting room. "Jay…" He walked outside past the nurse.

"He is still unconscious in the ICU. There's nothing you can do right now."

It was true. He couldn't do anything else but wait. "Let's go." He followed the older woman downstairs to the Emergency Department.

"Male, 35, GSW in the chest and head, he in a coma, not responding."

"Trauma 1." He demanded going after the paramedics. "On my count. 1,2,3." Soon the man was moved on a bed with Will and Choi working above him. They ripped off his shirt and noticed the blood on his abdomen. "Shit…" Will mumbled as soon as he noticed his vitals. "We need to take him to the OR."

"I got it." Another voice was heard. "You should talk to the police."

Shit… He hadn't told them yet. They were unaware of the fact that one of their own was hospitalized.

"Voight…" He said breathing heavily.

"Will, I did have the time to pay my condolences to you. I am deeply sorry for what happened to your father. I gave your brother a speech yesterday, I hope he is alright, physically and mentally, the team couldn't afford to lose him."

The tears he was holding ran down his cheeks as he made eye contact with Jay's boss. He leaned on the front desk trying to breathe.

"What's going on?" Voight asked curious.

"Follow me. Bring Hailey and Antonio with you."

Without any comments to the doctor's demand, they all ascended the stairs and walked down the pathway leading to the ICU. Will stopped for a moment, he looked back and continued walking. The three detectives had no clue of what they were gonna see until they all stopped in front of a room which was covered by curtains so that no one could look inside. "I am sorry I didn't tell you earlier but there were a lot of things going on last night." Will exclaimed and opened the door only to reveal the detective laying down on the hospital bed. Hailey gasped. Antonio's heart dropped to his knees and Voight… Voight just stood still watching Jay's chest rising and falling slowly and steadily. "He was brought here last night, we lost him three times but he is finally stable."

Hailey shook her head and buried it to Antonio's chest in tears.

"May I?" Voight asked receiving a nod from the young doctor.

He marched to his detective's side and stood there for a few moments. He looked at the monitor which was beeping steadily. He frowned. Jay was alright after the shooting event, well as okay as a person who had gotten shot, could be. "Don't give up Halstead, your team needs you." Stroking his hair, he got out of the room to Hailey and Antonio's side.

"What happened?" The latter inquired staring at his best friend.

An explanation was hard to be given. As he was talking to the police, he could not stop thinking his mistake, the one that put his brother into the Intensive Care. Of course, he kept that to himself, he was ready to share it with anyone yet, especially with the Chicago PD.

Just as Voight was about to comfort Will, his radio went off. "I got to go. Antonio will stay here."

Will nodded sighing. He led the policeman to the waiting room and headed down to the ED. Almost every single room was empty, not a busy day for the hospital. Maggie was on the computer, April with a patient and Natalie with another one.

"You should take the week off." Goodwin's voice was heard from behind him.

"I am fine."

"When was the last time you looked yourself in the mirror? You should definitely get some sleep."

"I am okay."

"You will not help your brother if you pass out too. Go home, take a bath, get some sleep and come back later. Detective Dawson will update you."

He nodded. He knew he had to relax for a bit. Going home would also be a great opportunity for him to arrange everything for their father's funeral. He just hoped it would only be his', not his brother's too.

Hey guys, I am back with a One Chicago story. I hope you like it 3

~The Fourth Bionic~