Resiliency and mental toughness are essential ingredients success in life. I have the utmost respect for the SEALs, but they are not the toughest people on the planet. CAG, or Delta as it’s popularly known, has one of the toughest selection courses known to man, and that’s just to get accepted to start training. It’s all about mental toughness. The difference is they don’t want you to hear anything about what they do. To modify a quote from an old movie, SEALs make movies. CAG makes history.