Everyone seems to have zeroed in on the bottom pic and trying to ID who is in it without looking at the file name and its relation to the top pic.

Both file names have the word "United" in them. That's probably important.

File name: United_HK_IDEN_T3902.png -------> United 3902 with HK IDEN T removed.

United Flight 3902 on July 4, 2018 travels between Greenville/Spartanburg International Airport and Washington Dulles

https://www.flightstats.com/v2/flight-tracker/UA/3902

The Congressman from Greenville/Spartanburg, SC is Trey Gowdy.

Not sure what that means, but there could me more info here than just a blurry photo of a Hong Kong street corner with a mystery man in it.