... and know the PWA. Referencing extensions for FRMS flights specifically, our PWA actually gives us way more protection (to include pay protection with NO QUESTIONS ASKED) than 117. Pay attention to the rotation limits and don't feel pressure to walk if they want to extend your duty longer than what is printed on your rotation as the PWA max. Too many folks don't know how that works and simply allow extension to FAR limits... and scheduling sure isn't going to tell you how quickly you run out of PWA-restricted extension. I don't know what price was paid during negotiations NOT to let us live simply under 117 for FRMS extensions, but I'm sure it was significant. And it's probably part of each FRMS package submitted by Delta. Delta gets it done because they've hired mission accomplishers (who wouldn't?), but please at least be aware of your PWA obligations. That 3-hour departure delay could easily get you paid for the trip prior to departure, and even net a hefty GS for a pilot covering you after you walk. Or maybe it's a GSWC because Delta made the business decision to run lean and they don't have a body to GS the delayed FRMS flight. Don't feel obligated to go outside the PWA to solve Delta's pickle... that you didn't create.