There is nothing quite like the expression a child gives when they see what their parents do for a living. In fact, seeing a parent in the workplace is considered an important step in childhood development, as it fosters a desire to contemplate what they want to be when they grow up.
At some point, children want to take after their parents and contribute to society by pursuing a career, often in something that has always interested them.
In this video, a little boy watches as a train goes by. The train is owned and operated by Norfolk Southern, but what makes it so special is that his dad is the engineer. The dad waves to his son, and as the son realizes who is driving, his expression of delight will melt your heart.