The techniques used by Chief Mina that have helped him succeed include taking proactive steps towards improving relations with both members of his departmental staff and members of the public through his commitment to open communication. He has also sought ways to increase engagement with citizens by attending neighborhood meetings, hosting town hall events, and launching social media campaigns aimed at increasing awareness about current issues facing law enforcement personnel. Additionally, he has been vocal in advocating for greater transparency regarding data related to use-of-force incidents among police officers so that better decisions can be made moving forward. I believe some important characteristics of an effective criminal justice leader include: being able to think critically & strategically when it comes problem solving; having strong communication & interpersonal skills enabling one interact effectively across different levels within organization – from rank/file up higher ups ; understanding need consider ethical standards when making decisions not only maintain integrity organization but also protect rights safety all those involved (as well general public); maintaining positive attitude even during toughest times stay resilient face inevitable challenges come way while leading others do same; having sound judgement operate proactively rather than reactively mitigate risks posed any given situation & ensure best outcomes etc.. Overall I believe John Mina provides model what type behavior should aspire too – putting emphasis building relationships communities served through constructive dialogue fostering mutual respect understanding bridging gaps mistrust created between marginalized groups police officers over time – something needed now more ever amid rising tension climate change caused by various recent events occurring around nation.