Please answer the following question: Information: - A title is a prefix or suffix added to someone's name in certain contexts. It may signify either veneration, an official position or a professional or academic qualification. In some languages, titles may be inserted before a last name (for example, "Graf" in German, Cardinal in Catholic usage or clerical titles such as Archbishop). Some titles are hereditary. - The American Bar Association (ABA), founded August 21, 1878, is a voluntary bar association of lawyers and law students, which is not specific to any jurisdiction in the United States. The ABA's most important stated activities are the setting of academic standards for law schools, and the formulation of model ethical codes related to the legal profession. The ABA has 410,000 members. Its national headquarters are in Chicago, Illinois; it also maintains a significant branch office in Washington, D.C. - Legal profession is a profession, and legal professionals study, develop and apply law. Usually, there is a requirement for someone choosing a career in law to first obtain a law degree or some other form of legal education. - Portland Head Light is a historic lighthouse in Cape Elizabeth, Maine. The light station sits on a head of land at the entrance of the primary shipping channel into Portland Harbor, which is within Casco Bay in the Gulf of Maine. Completed in 1791, it is the oldest lighthouse in the state of Maine. The light station is automated, and the tower, beacon, and foghorn are maintained by the United States Coast Guard, while the former lighthouse keepers' house is a maritime museum within Fort Williams Park. - Of counsel is, in the legal profession of the United States, often the title of an attorney who has a relationship with a law firm or an organization, but is not an associate or a partner. Some firms use titles such as "counsel", "special counsel", and "senior counsel" for the same concept. According to American Bar Association Formal Opinion 90-357, the term "of counsel" is to describe a "close, personal, continuous, and regular relationship" between the firm and counsel lawyer.<ref name="http://www.lacba.org/showpage.cfm?pageid=12424"></ref> In large law firms, the title generally denotes a lawyer with the experience of a partner, but who does not carry the same workload or business development responsibility. - Portland is the largest city in the U.S. state of Maine. Portland had a population of 66,881 in 2015. The Greater Portland metropolitan area is home to over half a million people, more than one-third of Maine's total population. The Old Port district is frequented by tourists, while Portland Head Light is also a destination. The city seal depicts a phoenix rising from ashes, which is a reference to the recoveries from four devastating fires. Portland was named for the English Isle of Portland, and the city of Portland, Oregon was in turn named after Portland, Maine. - A U.S. state is a constituent political entity of the United States of America. There are 50 states, which are bound together in a union with each other. Each state holds administrative jurisdiction over a defined geographic territory, and shares its sovereignty with the United States federal government. Due to the shared sovereignty between each state and the federal government, Americans are citizens of both the federal republic and of the state in which they reside. State citizenship and residency are flexible, and no government approval is required to move between states, except for persons covered by certain types of court orders (e.g., paroled convicts and children of divorced spouses who are sharing custody). - A law firm is a business entity formed by one or more lawyers to engage in the practice of law. The primary service rendered by a law firm is to advise clients (individuals or corporations) about their legal rights and responsibilities, and to represent clients in civil or criminal cases, business transactions, and other matters in which legal advice and other assistance are sought. - Vincent Lee McKusick ( October 21 , 1921 -- December 3 , 2014 ) was an American attorney and Chief Justice of Maine . At the time of his death McKusick worked at the firm Pierce Atwood in Portland , Maine in the role of Of Counsel . McKusick began practicing law with Pierce Atwood in 1952 . For twenty - five years -- until he was appointed by Governor James B. Longley as Maine 's Chief Justice -- McKusick engaged in general practice with the firm . Prior to joining Pierce Atwood in 1952 , McKusick served successively as law clerk to Chief Judge Learned Hand of the United States Court of Appeals for the Second Circuit and to Justice Felix Frankfurter of the United States Supreme Court . From 1943 to 1946 , he served in the U.S. Army , in part in Los Alamos , New Mexico , participating in the Manhattan Project . After reading the paragraphs above, we are interested in knowing the entity with which 'vincent l. mckusick' exhibits the relationship of 'occupation'. Find the answer from the choices below. Choices: - academic - criminal - guard - lawyer - official - profession - senior counsel - united states of america
A:
lawyer