"Charles Packer" wrote in message
...
A big boom over Washington D.C.around 9:30-10:00PM EDT
tonight (Friday, June 20) must have been the sonic variety.
Sonic booms over Washington are rare -- like never -- hence
worth remarking on, hence this posting.

--
Charles Packer
http://cpacker.org/whatnews
mailboxATcpacker.org

What parts exactly? Can you pin it down to a specific locale?

"Never"? No. They're rare but not unheard of (no pun intended). It may have been some
post-9/11 air defense exercises. That's assuming that it really was the sound of an
aircraft breaking the sound barrier.