Task: sc_petitioner

What follows is an opinion from the Supreme Court of the United States. Your task is to identify the petitioner of the case. The petitioner is the party who petitioned the Supreme Court to review the case. This party is variously known as the petitioner or the appellant. Characterize the petitioner as the Court's opinion identifies them.

Identify the petitioner by the label given to the party in the opinion or judgment of the Court except where the Reports title a party as the "United States" or as a named state. Textual identification of parties is typically provided prior to Part I of the Court's opinion. The official syllabus, the summary that appears on the title page of the case, may be consulted as well. In describing the parties, the Court employs terminology that places them in the context of the specific lawsuit in which they are involved. For example, "employer" rather than "business" in a suit by an employee; as a "minority," "female," or "minority female" employee rather than "employee" in a suit alleging discrimination by an employer.

Also note that the Court's characterization of the parties applies whether the petitioner is actually single entity or whether many other persons or legal entities have associated themselves with the lawsuit. That is, the presence of the phrase, et al., following the name of a party does not preclude the Court from characterizing that party as though it were a single entity. Thus, identify a single petitioner, regardless of how many legal entities were actually involved. If a state (or one of its subdivisions) is a party, note only that a state is a party, not the state's name.

Per Curiam.
Police officers responded to a complaint of a disturbance near Allen Road in Brownstown, Michigan. Officer Christopher Goolsby later testified that, as he and his partner approached the area, a couple directed them to a residence where a man was “going crazy.” Docket No. 276439, 2008 WL 786515, *1 (Mich. App., Mar. 25, 2008) (per curiam) (alteration and internal quotation marks omitted). Upon their arrival, the officers found a household in considerable chaos: a pickup truck in the driveway with its front smashed, damaged fenceposts along the side of the property, and three broken house windows, the glass still on the ground outside. The officers also noticed blood on the hood of the pickup and on clothes inside of it, as well as on one of the doors to the house. (It is disputed whether they noticed this immediately upon reaching the house, but undisputed that they noticed it before the allegedly unconstitutional entry.) Through a window, the officers could see respondent, Jeremy Fisher, inside the house, screaming and throwing things. The back door was locked, and a couch had been placed to block the front door.
The officers knocked, but Fisher refused to answer. They saw that Fisher had a cut on his hand, and they asked him whether he needed medical attention. Fisher ignored these questions and demanded, with accompanying profanity, that the officers go to get a search warrant. Officer Goolsby then pushed the front door partway open and ventured into the house. Through the window of the open door he saw Fisher pointing a long gun at him. Officer Goolsby withdrew.
Fisher was charged under Michigan law with assault with a dangerous weapon and possession of a firearm during the commission of a felony. The trial court concluded that Officer Goolsby violated the Fourth Amendment when he entered Fisher’s house, and granted Fisher’s motion to suppress the evidence obtained as a result — that is, Officer Goolsby’s statement that Fisher pointed a rifle at him. The Michigan Court of Appeals initially remanded for an evidentiary hearing, see Docket No. 256027, 2005 WL 3481454 (Dec. 20, 2005) (per curiam), after which the trial court reinstated its order. The Court of Appeals then affirmed over a dissent by Judge Talbot. See 2008 WL 786515, at *2; id., at *2-*5. The Michigan Supreme Court granted leave to appeal, but, after hearing oral argument, it vacated its prior order and denied leave instead; three justices, however, would have taken the case and reversed on the ground that the Court of Appeals misapplied the Fourth Amendment. See 483 Mich. 1007, 765 N. W. 2d 19 (2009). Because the decision of the Michigan Court of Appeals is indeed contrary to our Fourth Amendment ease law, particularly Brigham City v. Stuart, 547 U. S. 398 (2006), we grant the State’s petition for certiorari and reverse.
“[T]he ultimate touchstone of the Fourth Amendment,” we have often said, “is ‘reasonableness.’ ” Id., at 403. Therefore, although “searches and seizures inside a home without a warrant are presumptively unreasonable,” Groh v. Ramirez, 540 U. S. 551, 559 (2004) (internal quotation marks omitted), that presumption can be overcome. For example, “the exigencies of the situation [may] make the needs of law enforcement so compelling that the warrantless search is objectively reasonable.” Mincey v. Arizona, 437 U. S. 385, 393-394 (1978) (internal quotation marks omitted).
Brigham City identified one such exigency: “the need to assist persons who are seriously injured or threatened with such injury.” 547 U. S., at 403. Thus, law enforcement officers “may enter a home without a warrant to render emergency assistance to an injured occupant or to protect an occupant from imminent injury.” Ibid. This “emergency aid exception” does not depend on the officers’ subjective intent or the seriousness of any crime they are investigating when the emergency arises. Id., at 404-405. It requires only “an objectively reasonable basis for believing,” id., at 406, that “a person within [the house] is in need of immediate aid,” Mincey, supra, at 392.
Brigham City illustrates the application of this standard. There, police officers responded to a noise complaint in the early hours of the morning. “As they approached the house, they could hear from within an altercation occurring, some kind of fight.” 547 U. S., at 406 (internal quotation marks omitted). Following the tumult to the back of the house whence it came, the officers saw juveniles drinking beer in the backyard and a fight unfolding in the kitchen. They watched through the window as a juvenile broke free from the adults restraining him and punched another adult in the face, who recoiled to the sink, spitting blood. Ibid. Under these circumstances, we found it “plainly reasonable” for the officers to enter the house and quell the violence, for they had “an objectively reasonable basis for believing both that the injured adult might need help and that the violence in the kitchen was just beginning.” Ibid.
A straightforward application of the emergency aid exception, as in Brigham, City, dictates that the officer’s entry was reasonable. Just as in Brigham City, the police officers here were responding to a report of a disturbance. Just as in Brigham City, when they arrived on the scene they encountered a tumultuous situation in the house — and here they also found signs of a recent injury, perhaps from a car accident, outside. And just as in Brigham City, the officers could see violent behavior inside. Although Officer Goolsby and his partner did not see punches thrown, as did the officers in Brigham City, they did see Fisher screaming and throwing things. It would be objectively reasonable to believe that Fisher’s projectiles might have a human target (perhaps a spouse or a child), or that Fisher would hurt himself in the course of his rage. In short, we find it as plain here as we did in Brigham City that the officer’s entry was reasonable under the Fourth Amendment.
The Michigan Court of Appeals, however, thought the situation “did not rise to a level of emergency justifying the warrantless intrusion into a residence.” 2008 WL 786515, at *2. Although the Court of Appeals conceded that “there was evidence an injured person was on the premises,” it found it significant that “the mere drops of blood did not signal a likely serious, life-threatening injury.” Ibid. The court added that the cut Officer Goolsby observed on Fisher’s hand “likely explained the trail of blood” and that Fisher “was very much on his feet and apparently able to see to his own needs.” Ibid.
Even a casual review of Brigham City reveals the flaw in this reasoning. Officers do not need ironclad proof of “a likely serious, life-threatening” injury to invoke the emergency aid exception. The only injury police could confirm in Brigham City was the bloody lip they saw the juvenile inflict upon the adult. Fisher argues that the officers here could not have been motivated by a perceived need to provide medical assistance, since they never summoned emergency medical personnel. This would have no bearing, of course, upon their need to ensure that Fisher was not endangering someone else in the house. Moreover, even if the failure to summon medical personnel conclusively established that Goolsby did not subjectively believe, when he entered the house, that Fisher or someone else was seriously injured (which is doubtful), the test, as we have said, is not what Goolsby believed, but whether there was “an objectively reasonable basis for believing” that medical assistance was needed, or persons were in danger, Brigham City, supra, at 406; Mincey, supra, at 392.
It was error for the Michigan Court of Appeals to replace that objective inquiry into appearances with its hindsight determination that there was in fact no emergency. It does not meet the needs of law enforcement or the demands of public safety to require officers to walk away from a situation like the one they encountered here. Only when an apparent threat has become an actual harm can officers rule out innocuous explanations for ominous circumstances. But “[t]he role of a peace officer includes preventing violence and restoring order, not simply rendering first aid to casualties.” Brigham City, supra, at 406. It sufficed to invoke the emergency aid exception that it was reasonable to believe that Fisher had hurt himself (albeit nonfatally) and needed treatment that in his rage he was unable to provide, or that Fisher was about to hurt, or had already hurt, someone else. The Michigan Court of Appeals required more than what the Fourth Amendment demands.
* * *
The petition for certiorari is granted. The judgment of the Michigan Court of Appeals is reversed, and the ease is remanded for further proceedings not inconsistent with this opinion.
It is so ordered.
We have taken the facts from the opinion of the Michigan Court of Appeals. Except where indicated, the parties do not dispute the facts.

Question: Who is the petitioner of the case?
年. attorney general of the United States, or his office
数. specified state board or department of education
日. city, town, township, village, or borough government or governmental unit
的. state commission, board, committee, or authority
月. county government or county governmental unit, except school district
用. court or judicial district
成. state department or agency
名. governmental employee or job applicant
时. female governmental employee or job applicant
件. minority governmental employee or job applicant
一. minority female governmental employee or job applicant
请. not listed among agencies in the first Administrative Action variable
中. retired or former governmental employee
据. U.S. House of Representatives
码. interstate compact
不. judge
新. state legislature, house, or committee
文. local governmental unit other than a county, city, town, township, village, or borough
下. governmental official, or an official of an agency established under an interstate compact
分. state or U.S. supreme court
入. local school district or board of education
人. U.S. Senate
功. U.S. senator
上. foreign nation or instrumentality
户. state or local governmental taxpayer, or executor of the estate of
为. state college or university
间. United States
号. State
取. person accused, indicted, or suspected of crime
回. advertising business or agency
在. agent, fiduciary, trustee, or executor
页. airplane manufacturer, or manufacturer of parts of airplanes
字. airline
有. distributor, importer, or exporter of alcoholic beverages
个. alien, person subject to a denaturalization proceeding, or one whose citizenship is revoked
作. American Medical Association
示. National Railroad Passenger Corp.
出. amusement establishment, or recreational facility
是. arrested person, or pretrial detainee
失. attorney, or person acting as such;includes bar applicant or law student, or law firm or bar association
表. author, copyright holder
除. bank, savings and loan, credit union, investment company
加. bankrupt person or business, or business in reorganization
败. establishment serving liquor by the glass, or package liquor store
生. water transportation, stevedore
信. bookstore, newsstand, printer, bindery, purveyor or distributor of books or magazines
类. brewery, distillery
置. broker, stock exchange, investment or securities firm
理. construction industry
本. bus or motorized passenger transportation vehicle
息. business, corporation
行. buyer, purchaser
定. cable TV
改. car dealer
市. person convicted of crime
期. tangible property, other than real estate, including contraband
以. chemical company
修. child, children, including adopted or illegitimate
元. religious organization, institution, or person
方. private club or facility
录. coal company or coal mine operator
区. computer business or manufacturer, hardware or software
单. consumer, consumer organization
位. creditor, including institution appearing as such; e.g., a finance company
型. person allegedly criminally insane or mentally incompetent to stand trial
法. defendant
县. debtor
存. real estate developer
品. disabled person or disability benefit claimant
前. distributor
称. person subject to selective service, including conscientious objector
注. drug manufacturer
值. druggist, pharmacist, pharmacy
输. employee, or job applicant, including beneficiaries of
建. employer-employee trust agreement, employee health and welfare fund, or multi-employer pension plan
能. electric equipment manufacturer
大. electric or hydroelectric power utility, power cooperative, or gas and electric company
例. eleemosynary institution or person
度. environmental organization
始. employer. If employer's relations with employees are governed by the nature of the employer's business (e.g., railroad, boat), rather than labor law generally, the more specific designation is used in place of Employer.
到. farmer, farm worker, or farm organization
面. father
载. female employee or job applicant
点. female
密. movie, play, pictorial representation, theatrical production, actor, or exhibitor or distributor of
动. fisherman or fishing company
果. food, meat packing, or processing company, stockyard
图. foreign (non-American) nongovernmental entity
提. franchiser
发. franchisee
式. lesbian, gay, bisexual, transexual person or organization
国. person who guarantees another's obligations
登. handicapped individual, or organization of devoted to
错. health organization or person, nursing home, medical clinic or laboratory, chiropractor
者. heir, or beneficiary, or person so claiming to be
认. hospital, medical center
误. husband, or ex-husband
接. involuntarily committed mental patient
关. Indian, including Indian tribe or nation
重. insurance company, or surety
第. inventor, patent assigner, trademark owner or holder
地. investor
如. injured person or legal entity, nonphysically and non-employment related
设. juvenile
目. government contractor
开. holder of a license or permit, or applicant therefor
事. magazine
可. male
要. medical or Medicaid claimant
代. medical supply or manufacturing co.
小. racial or ethnic minority employee or job applicant
选. minority female employee or job applicant
标. manufacturer
明. management, executive officer, or director, of business entity
编. military personnel, or dependent of, including reservist
求. mining company or miner, excluding coal, oil, or pipeline company
列. mother
网. auto manufacturer
万. newspaper, newsletter, journal of opinion, news service
最. radio and television network, except cable tv
器. nonprofit organization or business
所. nonresident
内. nuclear power plant or facility
体. owner, landlord, or claimant to ownership, fee interest, or possession of land as well as chattels
通. shareholders to whom a tender offer is made
务. tender offer
此. oil company, or natural gas producer
商. elderly person, or organization dedicated to the elderly
序. out of state noncriminal defendant
化. political action committee
消. parent or parents
否. parking lot or service
保. patient of a health professional
使. telephone, telecommunications, or telegraph company
次. physician, MD or DO, dentist, or medical society
机. public interest organization
对. physically injured person, including wrongful death, who is not an employee
量. pipe line company
查. package, luggage, container
部. political candidate, activist, committee, party, party member, organization, or elected official
性. indigent, needy, welfare recipient
和. indigent defendant
更. private person
后. prisoner, inmate of penal institution
证. professional organization, business, or person
题. probationer, or parolee
确. protester, demonstrator, picketer or pamphleteer (non-employment related), or non-indigent loiterer
格. public utility
了. publisher, publishing company
于. radio station
金. racial or ethnic minority
公. person or organization protesting racial or ethnic segregation or discrimination
午. racial or ethnic minority student or applicant for admission to an educational institution
円. realtor
片. journalist, columnist, member of the news media
空. resident
态. restaurant, food vendor
管. retarded person, or mental incompetent
主. retired or former employee
天. railroad
自. private school, college, or university
我. seller or vendor
全. shipper, including importer and exporter
今. shopping center, mall
来. spouse, or former spouse
正. stockholder, shareholder, or bondholder
说. retail business or outlet
意. student, or applicant for admission to an educational institution
送. taxpayer or executor of taxpayer's estate, federal only
容. tenant or lessee
已. theater, studio
结. forest products, lumber, or logging company
会. person traveling or wishing to travel abroad, or overseas travel agent
段. trucking company, or motor carrier
计. television station
源. union member
色. unemployed person or unemployment compensation applicant or claimant
時. union, labor organization, or official of
交. veteran
系. voter, prospective voter, elector, or a nonelective official seeking reapportionment or redistricting of legislative districts (POL)
过. wholesale trade
电. wife, or ex-wife
询. witness, or person under subpoena
符. network
未. slave
程. slave-owner
常. bank of the united states
条. timber company
当. u.s. job applicants or employees
情. Army and Air Force Exchange Service
口. Atomic Energy Commission
合. Secretary or administrative unit or personnel of the U.S. Air Force
车. Department or Secretary of Agriculture
实. Alien Property Custodian
组. Secretary or administrative unit or personnel of the U.S. Army
版. Board of Immigration Appeals
周. Bureau of Indian Affairs
址. Bonneville Power Administration
记. Benefits Review Board
二. Civil Aeronautics Board
同. Bureau of the Census
业. Central Intelligence Agency
权. Commodity Futures Trading Commission
其. Department or Secretary of Commerce
进. Comptroller of Currency
试. Consumer Product Safety Commission
验. Civil Rights Commission
料. Civil Service Commission, U.S.
传. Customs Service or Commissioner of Customs
述. Defense Base Closure and REalignment Commission
集. Drug Enforcement Agency
多. Department or Secretary of Defense (and Department or Secretary of War)
无. Department or Secretary of Energy
员. Department or Secretary of the Interior
报. Department of Justice or Attorney General
他. Department or Secretary of State
無. Department or Secretary of Transportation
服. Department or Secretary of Education
线. U.S. Employees' Compensation Commission, or Commissioner
这. Equal Employment Opportunity Commission
制. Environmental Protection Agency or Administrator
将. Federal Aviation Agency or Administration
处. Federal Bureau of Investigation or Director
高. Federal Bureau of Prisons
子. Farm Credit Administration
道. Federal Communications Commission (including a predecessor, Federal Radio Commission)
章. Federal Credit Union Administration
手. Food and Drug Administration
库. Federal Deposit Insurance Corporation
三. Federal Energy Administration
从. Federal Election Commission
支. Federal Energy Regulatory Commission
家. Federal Housing Administration
长. Federal Home Loan Bank Board
付. Federal Labor Relations Authority
秒. Federal Maritime Board
路. Federal Maritime Commission
完. Farmers Home Administration
象. Federal Parole Board
则. Federal Power Commission
现. Federal Railroad Administration
京. Federal Reserve Board of Governors
转. Federal Reserve System
辑. Federal Savings and Loan Insurance Corporation
限. Federal Trade Commission
力. Federal Works Administration, or Administrator
学. General Accounting Office
外. Comptroller General
调. General Services Administration
项. Department or Secretary of Health, Education and Welfare
北. Department or Secretary of Health and Human Services
工. Department or Secretary of Housing and Urban Development
笑. Interstate Commerce Commission
监. Indian Claims Commission
任. Immigration and Naturalization Service, or Director of, or District Director of, or Immigration and Naturalization Enforcement
相. Internal Revenue Service, Collector, Commissioner, or District Director of
微. Information Security Oversight Office
册. Department or Secretary of Labor
联. Loyalty Review Board
平. Legal Services Corporation
增. Merit Systems Protection Board
听. Multistate Tax Commission
解. National Aeronautics and Space Administration
等. Secretary or administrative unit of the U.S. Navy
得. National Credit Union Administration
收. National Endowment for the Arts
安. National Enforcement Commission
价. National Highway Traffic Safety Administration
藏. National Labor Relations Board, or regional office or officer
命. National Mediation Board
应. National Railroad Adjustment Board
看. Nuclear Regulatory Commission
索. National Security Agency
资. Office of Economic Opportunity
产. Office of Management and Budget
串. Office of Price Administration, or Price Administrator
布. Office of Personnel Management
原. Occupational Safety and Health Administration
知. Occupational Safety and Health Review Commission
级. Office of Workers' Compensation Programs
水. Patent Office, or Commissioner of, or Board of Appeals of
击. Pay Board (established under the Economic Stabilization Act of 1970)
好. Pension Benefit Guaranty Corporation
物. U.S. Public Health Service
放. Postal Rate Commission
亿. Provider Reimbursement Review Board
经. Renegotiation Board
模. Railroad Adjustment Board
之. Railroad Retirement Board
台. Subversive Activities Control Board
州. Small Business Administration
配. Securities and Exchange Commission
画. Social Security Administration or Commissioner
统. Selective Service System
共. Department or Secretary of the Treasury
连. Tennessee Valley Authority
海. United States Forest Service
节. United States Parole Commission
退. Postal Service and Post Office, or Postmaster General, or Postmaster
間. United States Sentencing Commission
比. Veterans' Administration
问. War Production Board
至. Wage Stabilization Board
备. General Land Office of Commissioners
你. Transportation Security Administration
黑. Surface Transportation Board
或. U.S. Shipping Board Emergency Fleet Corp.
与. Reconstruction Finance Corp.
影. Department or Secretary of Homeland Security
话. Unidentifiable
视. International Entity
Answer:

Answer: 号