Needless to say, that means there was a Clinton involved, and a senior member of the Obama administration (who was using the plane).
The Obama official was CIA Director John Brennan. Brennan, oddly enough, was also there, at least ostensibly, for the conference.
Brennan’s presence is also confirmed by photos from the conference, and a speakers list from a page that is no longer extant in its original location on the Web. (More on that in a moment.)