Apparently, there is a move at Frederick Airport in Maryland to build a Tower facility for it.
I don't fly there. A good friend just got his ticket there last fall.
During his training and since, he figures he's had 4 or 5 "close calls" with traffic.
One he figured he was about 10 seconds from at least a "near miss".
A couple were stupid people. However, he has legitimately relayed stories
of confusion due to the increase in traffic and # of people calling in.
Many people moved planes there due to the ADIZ situation around DC/Baltimore.
The permanent parking spots are all taken.

Just an interesting thing I saw last night I saw a WJZ 13 from Baltimore on a news report
about the situation. They included a quick recounting of a near miss with a State Police helicopter.

I also understand that AOPA's headquarters are at or near FDK.

Just thought I'd throw that in.