we believe in wise council, accountability, & forward thinking mindsets.



gary mcclure is an expert practitioner at north highland, a consulting firm based in nashville, tn.  gary has more than 30 years management experience with companies ranging from fortune 50 to small firms and in a variety of industries.

a certified professional facilitator, gary leads teams to reach goals and frequently directs complex projects that include process enhancement, rebranding/repositioning, and business strategy. prior to c3, gary spent eight years in the technology division of lifeway, led marketing for a leading economic development publication, and spent 10 years with nortel networks in various strategic marketing leadership roles.  gary has an economics degree from mississippi state university and an mba from the owen school at vanderbilt university. 

gary also is active in the nashville community. he is an adjunct professor at vanderbilt university. and in addition to the collective, he serves on several boards including young life, in his grip golf, and operation andrew. he and his wife live in brentwood, tn. 



amani is a talented investor and sales leader who has guided several organizations in starting, and growing, their businesses. 

in addition to engaging with budding organizations, and growing his own real estate development company, he is a published author who works for a global and publicly traded company as a director in their sales division.


Cassie Carl-Rohm

Cassie Carl-Rohm is the former Global Human Resources Leader for XLP, GE’s Accelerated Leadership Program. Prior to her current role, Cassie served as Global Program Director for the GE Corporate Leadership Staff as well as Organization & Talent Development Leader in Aviation. Cassie is a graduate of Xavier University, where she earned her master’s degree in business administration.  She also holds a bachelor’s degree with a double major in HR and business administration from Miami University. Cassie is active in the community for children’s education & development.  She has led Girl Scouts and Junior Achievement. She resides with her husband, Steve, and her two daughters in Charlotte, North Carolina.



wes is the president of mainsail group. he received his ba from ole miss / college of liberal arts, and his m.b.a from belmont university with an emphasis in entrepreneurial ventures and accounting. with a professional background in finance, wes has spent the past seven years scaling non-traditional expense reduction projects for leading healthcare executives. he has engaged in consulting projects for 500+ hospitals. previous clients include hca, ascension, chi and other notable health systems.


Duane Murray

Duane started his twelve-year career in healthcare developing a statewide management services organization for private and Baptist-owned practices in Central Kentucky. He then transitioned to middle TN to become CEO of a 12 doctor Orthopaedic Surgery group in Franklin, TN, where he led them to consecutive years of their highest profitability and expansion. This included the successful development of a free-standing, physician-owned surgery center. But instead of taking the next career jump when it came in 2005, Duane made the courageous decision to leave a promising healthcare career to support the growing ministry of his church. He went from health care to soul care. Duane became the Executive Pastor at Thompson Station Church. It was a fulfillment of a calling from when he was 13 years old. Over twelve years as Executive Pastor the church developed locally, launched an international missions plan, started a satellite church, and planted churches in Las Vegas and Cincinnati. More than that he developed a passion to be a disciple who makes disciples who make disciples. Discipleship started at home where he partnered with his wife, Kristen, to intentionally pour into their three children. These three children have developed their own passion for a personal relationship with Christ that includes ministering to others. All three children are pursuing business degrees with the plan to use their business as a platform for ministry. Duane sees his contribution to the mission of Christ (to reach every nation) is through discipleship in the marketplace. In this season of life, he utilizes his gifts for facilitation and insightful inquiry to spur business leaders to build great businesses for a greater purpose as a chair in C12’s Greater Nashville area.