This question may also be asked in other ways such as, What are your strong points? or What assets will you bring to this agency? This is your chance to brag about yourself. Everyone has good qualities. Tell them what characteristics you possess that will help you in your job performance. There is a big difference between articulating your strength and boasting. State things as matter-of-fact and avoid embellishing. If you were in a supervisory position, make clear your ability to manage people. Avoid statements such as: Everyone likes me or Everyone knew how well I did this. State your strengths as measurable or documented things. Such statements would be: There was a low turn over during the time I was a supervisor or My boss gave me additional responsibilities. Being liked is an admirable trait but showing your ability to perform is more important. Take some time before the interview and think about your strong points.