According to what I can glean off the web, this is likely a variation of the Sikorsky S-61, shown below in a Malaysian owned version.
This is an example of the flag on the helicopter.
I just saw this today as I was driving back from a bike ride in Davidson. Quite shocking - brings another part of the world right in your face. It appears they were simply driving around the bridges as the copter is probably too tall. Egyptian? I think so, though most Eqyptian flags I've seen on the web have a yellow bird/eagle in the center. While this one seems to have a black one.
