OTOH, the D-boys have often been used to review embassy security or operate roles outside of their primary roles (like being a liaison to a foreign hostage rescue team in training, going in to observe and advise when another country is dealing with a hostage or terrorism situation). SEAL training is probably a bit more physically demanding…part of it is they are expected to be great swimmers, scuba qualified, and the cold water training in hell week is supposed to really kick your butt. Delta operators tend to be a bit older than most SEALs (I can’t speak for the age comparison for DevGru though it seems to me that Delta would still be older).