Sorry about misinterpreting you, CleCo...I think everyone's running on high right now, and personally, I'm trying to keep abreast of the latest information on the local newscasts so that I can report it to those who can't see it. My apologies.
All I know is that no further aircraft other than the four that were destroyed this morning have crashed. Another Washingtonian (GoCaps16, I believe) reported something along the lines of what you're asking about much earlier, but the media hasn't mentioned it for upwards of 5 hours. I haven't seen anything around here, and certainly have't heard anything.