The Plot Thickens

 So, the New York Times is reporting that a noted physician who specializes in motor diseases has been regularly visiting the White House.  The guy is the leading doc in Parkinson's disease.  But, the reporting from the White House doc leads to more questions than it answers.

For example:

Instead, Dr. O’Connor implied that most of Dr. Cannard’s visits were related to treating other people who work at the White House. “Prior to the pandemic, and following its end, he has held regular neurology clinics at the White House Medical Clinic in support of the thousands of active-duty members assigned in support of White House operations,” Dr. O’Connor wrote.

First question:  Why do we have thousands of active duty service members assigned to the White House?  I could see a couple of hundred, but thousands? 

Second question:  How many of then have Parkinson's?  Jeez, it sounds like an epidemic?

I sincerely doubt that we have thousands of "active duty members" assigned to the White House, who all have Parkinson's.  A more complete explanation is in order.