To make sure I understand the question, are you asking how much we invest in people, training, process, and technology? I don't have the number in front of me, but it's in excess of double-digit millions of dollars through technology, through people, and through training.
When you speak to PTC, it is a technology that is undeveloped and yet to be developed. It has been mandated in U.S. operations. Once it's fully deployed, we estimate it's going to be in excess of $350 million invested.