I could swear this is what destroyed Krypton...

Indeed. DC is 10 miles (16km) square. (with Arlington being the part of the square that resides in VA). With the capitol building as its center, that's only 7km to the farthest tip of DC. Essentially, you'll be unable to fly a drone ANYWHERE in DC and in huge swaths of adjacent MD and DC.

In fact, 25km would essentially rule out drones anywhere inside the DC Beltway...

Calvin has been trying to figure out which muscle to flex for decades...