The target?
Passenger 32! Former CFO of Rosatom Overseas!! Vyacheslov Ivanov
This is interesting:
http://www.foxnews.com/politics/2018/02/08/democratic-sen-mark-warner-texted-with-russian-oligarch-lobbyist-in-effort-to-contact-dossier-author-christopher-steele.html
Could this unknown person be the target. Was he on the plane? Just one possibility.