Tony Gruebl, Jeff Welch, and Bryan Wolbert are principles of Think Systems, Inc. (also known as, Think), a 15-year-old operations consulting firm in Baltimore, Maryland where each author resides. Together, they have over 75 years of experience in Operations, Technology, Finance, and Learning & Development. Tony is Think's President and a former COO and VP in the software industry. Jeff is an engineer by trade and an Agile Transformation Coach; and he has worked as a lead Learning Solution Architect for Pearson Performance, Vangent, and later PDRI. Bryan is the current COO of Think and leader of Think's staffing division. Tony and Jeff collaborated on their first self-published book, Bare Knuckled Project Management (BKPM).