BTW, Navy Yard is up the Anacostia. Not at all right across the Potomac. Quite a serious row.
I know that the Navy Yard is on the Anacostia River. But I was commenting to someone who thought Reagan National Airport was on the same side of the Potomac river as the Navy Yard. Thus, I said it’s across the Potomac. Sorry about any confusion. Someone in the Navy Yard could fire a missile and hit a plane taking off or landing at Reagan.