For the sake of argument and illustration I will presume that certain articles of ordinary diet, however beneficial in youth, are prejudicial in advanced life, like beans to a horse, whose common ordinary food is hay and corn.
The Secret Service is a strange group. They don't really have a leader. It's not set up like a military. Each one is supposed to be able to act like a leader when something comes up.
I suppose we all loved those kind of sci-fi movies where terrible things came out of swamps and came to Mars. And there's usually some poor girl. All the guys are trying to desperately handle levers and saying, go to something or other.