But it made me wonder; just how agile is that Sikorski? Anyone know who
flys it for the show?

The ship that they used looked to be an old Sikorsky S-62 (HH-52 USCG) that
was painted up to look like Marine 1.
I believe there is a company that provides classic copters for TV/Movies.
But in last years final episode they actually used one of the USPP Bell 412s
in scenes shot by the Potomac in Georgetown. And the 206 seen in last
Wednesdays episode that was on station over the scene where Marine 1 landed
looked like one of the Virginia State PD
copters.

Gerard