Pat Grisby, Senior Coordinating Operating Engineer helps James Hinton, 12, right, of Golden Sierra Junior HS guide a backhoe simulator. Students from across the Sacramento area investigated future careers at CareerGPS at Cal Expo. The career fair for middle and high school students is the largest of its kind in Northern California and featured employers from a number of career fields from health care to energy to construction. Photo taken October 10, 2012 in Sacramento, California.