Conduct investigations to prevent crimes or solve criminal cases.
Examine crime scenes to obtain clues and evidence, such as loose hairs, fibers, clothing, or weapons.
Secure deceased body and obtain evidence from it, preventing bystanders from tampering with it prior to medical examiner's arrival.
Obtain evidence from suspects.
Provide testimony as a witness in court.
Analyze completed police reports to determine what additional information and investigative work is needed.
Prepare charges or responses to charges, or information for court cases, according to formalized procedures.
Note, mark, and photograph location of objects found, such as footprints, tire tracks, bullets and bloodstains, and take measurements of the scene.
Obtain facts or statements from complainants, witnesses, and accused persons and record interviews, using recording device.
Obtain summary of incident from officer in charge at crime scene, taking care to avoid disturbing evidence.
Examine records and governmental agency files to find identifying data about suspects.
Prepare and serve search and arrest warrants.
Block or rope off scene and check perimeter to ensure that entire scene is secured.
Summon medical help for injured individuals and alert medical personnel to take statements from them.
Provide information to lab personnel concerning the source of an item of evidence and tests to be performed.
Monitor conditions of victims who are unconscious so that arrangements can be made to take statements if consciousness is regained.
Secure persons at scene, keeping witnesses from conversing or leaving the scene before investigators arrive.
Preserve, process, and analyze items of evidence obtained from crime scenes and suspects, placing them in proper containers and destroying evidence no longer needed.
Record progress of investigation, maintain informational files on suspects, and submit reports to commanding officer or magistrate to authorize warrants.
Take photographs from all angles of relevant parts of a crime scene, including entrance and exit routes and streets and intersections.
Organize scene search, assigning specific tasks and areas of search to individual officers and obtaining adequate lighting as necessary.
Question individuals or observe persons and establishments to confirm information given to patrol officers.
Notify, or request notification of, medical examiner or district attorney representative.
Note relevant details upon arrival at scene, such as time of day and weather conditions.
Participate or assist in raids and arrests.
Videotape scenes where possible, including collection of evidence, examination of victim at scene, and defendants and witnesses.
Coordinate with outside agencies and serve on interagency task forces to combat specific types of crime.
Maintain surveillance of establishments to obtain identifying information on suspects.
Notify command of situation and request assistance.
Schedule polygraph tests for consenting parties and record results of test interpretations for presentation with findings.
Check victims for signs of life, such as breathing and pulse.
Observe and photograph narcotic purchase transactions to compile evidence and protect undercover investigators.
Law and Government -- Knowledge of laws, legal codes, court procedures, precedents, government regulations, executive orders, agency rules, and the democratic political process.
Public Safety and Security -- Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions.
English Language -- Knowledge of the structure and content of the English language including the meaning and spelling of words, rules of composition, and grammar.
Psychology -- Knowledge of human behavior and performance; individual differences in ability, personality, and interests; learning and motivation; psychological research methods; and the assessment and treatment of behavioral and affective disorders.
Administration and Management -- Knowledge of business and management principles involved in strategic planning, resource allocation, human resources modeling, leadership technique, production methods, and coordination of people and resources.
Education and Training -- Knowledge of principles and methods for curriculum and training design, teaching and instruction for individuals and groups, and the measurement of training effects.
Customer and Personal Service -- Knowledge of principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction.
Active Listening -- Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times.
Writing -- Communicating effectively in writing as appropriate for the needs of the audience.
Reading Comprehension -- Understanding written sentences and paragraphs in work related documents.
Critical Thinking -- Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems.
Speaking -- Talking to others to convey information effectively.
Coordination -- Adjusting actions in relation to others' actions.
Active Learning -- Understanding the implications of new information for both current and future problem-solving and decision-making.
Social Perceptiveness -- Being aware of others' reactions and understanding why they react as they do.
Time Management -- Managing one's own time and the time of others.
Persuasion -- Persuading others to change their minds or behavior.
Inductive Reasoning -- The ability to combine pieces of information to form general rules or conclusions (includes finding a relationship among seemingly unrelated events).
Oral Comprehension -- The ability to listen to and understand information and ideas presented through spoken words and sentences.
Oral Expression -- The ability to communicate information and ideas in speaking so others will understand.
Speech Recognition -- The ability to identify and understand the speech of another person.
Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations).
Near Vision -- The ability to see details at close range (within a few feet of the observer).
Flexibility of Closure -- The ability to identify or detect a known pattern (a figure, object, word, or sound) that is hidden in other distracting material.
Speech Clarity -- The ability to speak clearly so others can understand you.
Deductive Reasoning -- The ability to apply general rules to specific problems to produce answers that make sense.
Problem Sensitivity -- The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem.
Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources.
Identifying Objects, Actions, and Events -- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events.
Documenting/Recording Information -- Entering, transcribing, recording, storing, or maintaining information in written or electronic/magnetic form.
Making Decisions and Solving Problems -- Analyzing information and evaluating results to choose the best solution and solve problems.
Performing for or Working Directly with the Public -- Performing for people or dealing directly with the public. This includes serving customers in restaurants and stores, and receiving clients or guests.
Updating and Using Relevant Knowledge -- Keeping up-to-date technically and applying new knowledge to your job.
Communicating with Supervisors, Peers, or Subordinates -- Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person.
Processing Information -- Compiling, coding, categorizing, calculating, tabulating, auditing, or verifying information or data.
Organizing, Planning, and Prioritizing Work -- Developing specific goals and plans to prioritize, organize, and accomplish your work.
Interacting With Computers -- Using computers and computer systems (including hardware and software) to program, write software, set up functions, enter data, or process information.