Interviews and advises complainants and witnesses regarding prospective criminal or civil actions; Studies, interprets, and applies laws, court decisions, and legal authorities for use in prosecuting cases; Prepares legal pleadings such as complaints, answers, demurrers, discovery, and judgment and prosecutes a variety of cases; Performs related work such as preparing petitions, complaints, reports, and correspondence. Ability to: appraise, interpret, and apply legal principles and precedents to difficult legal problems; present statements of fact, law, and argument clearly and logically in written and oral form; prepare, present and conduct trials effectively; perform legal research; work effectively with others.