This question offers you a few opportunities. One approach is to showcase who your role model is, and why you chose to pursue your career path, and what drives you as a professional. Another approach is to offer a source of inspiration or someone you admire that influenced you to pursuing a career in this industry. Another is to consider someone, or a few individuals, who are along the lines of Warren Johnson, the founder of the original company that eventually evolved into Johnson Controls.

"Warren Johnson grew up in poverty, was self-taught, with little formal schooling, he had a gift for discovery. Even as a young boy, he kept a book in which he sketched and described mechanical, chemical and electrical inventions. His passion for invention continued throughout his life, resulting in 50 patents."

However you choose to answer, try to frame your answer in a manner that showcases your like-mindedness, and that you, in many ways, identify with and embraced the values which Johnson Controls holds dear.