The following are the security frequencies for select malls in Virginia, DC, and Maryland. I didn't bother to list the housekeeping and individual store frequencies, as this would make the list a bit unwieldy. For the full list of everything I've found at the malls, check out the individual county pages.
Lockheed Martin has an application pending before the FCC. The app is for the Gaithersburg location of the company "to coordinate activities and personnel during the development, testing, manufacture, demonstration and deployment of specialized electronics systems for customers and potential clients." The app calls for two repeaters and three simplex frequencies:
This past Saturday morning, there was a public safety exercise in Fairfax County. The exercise involved a mass casualty incident on a train in the Franconia area. Several of the "Major Incident" talkgroups from the Fairfax County Public Safety trunked system were active.
18128 FCFD 41B Major Incident Command 18320 FCFD 41H Major Incident Sector 3 18352 FCFD 41I Major Incident Sector 4 18384 FCFD 41J Major Incident Sector 5
The Major Incident talkgroups appear to be the "41" zone of Fairfax County Fire radios.
A couple of updates for the Fashion Centre at Pentagon City:
Armani Exchange is using 466.1125 [ d606]. This is the same frequency/tone combo in use at Tysons Corner.
An unknown store (probably clothing) is using 467.8500 [ d047]. This frequency/tone is usually used by Old Navy, but there is no Old Navy in the Pentagon City area. A check of the sister brands in the mall (Banana Republic and Gap) showed that they continue to use their VHF frequencies.
Artisphere, a multi-use art space that opened October 10, is using 462.5625 [67.0].
The Rosslyn Business Improvement District (BID) is using 461.8875 [CSQ] simplex. Note that the nearby Hotel Palomar also uses this frequency as a repeater with a tone of [136.5]. Gallaudet University Security is also on this frequency with a tone of [d243].
Here's what I found at the Marine Corps Marathon on Sunday: Marine Corps Trunked System Talkgroups (Site 403): 63034 Marshals 63037 Garbage 63038 Route 63039 Water 63044 Medical 63048 Shuttle Buses 63050 Information Technology 63056 Medical (Channel 2)