He has 10 years of experience working in the engineering division of Lockheed Martin, and he'd like to share some of his extensive knowledge with high school students in Northern Virginia, where he lives. He'd prefer to take a couple of hours each day to teach a class on physics or calculus, which would enable him to stay in his current job. Bill imagines that this part-time teaching job will give him the opportunity not just to teach, but to mentor local students aspiring to science careers.