Well my personal experience at St. Louis. As we trained, we picked the best trained or trainable people, help them become curators. And then as curators, help them develop to the utmost. Encourage them to be involved nationally, international with conservation endeavors. That they would continue to be motivated so that they became better. And many of them continued with their education and received master’s degrees and even PhD. A lot of our keepers, curators rather, been with us for 20 or 30 years. But we also have some keepers in the sidelines that are capable of moving up the ladder should we have need for replacements.