FAA just issued a TFR flight restriction for Dallas:
NOTAM Number : FDC 6/2615 Download shapefiles
Issue Date : July 08, 2016 at 0356 UTC
Location : DALLAS, Texas near COWBOY VOR/DME (CVE)
Beginning Date and Time : July 08, 2016 at 0335 UTC
Ending Date and Time : July 08, 2016 at 1130 UTC
Reason for NOTAM : Temporary flight restrictions
Type : Hazards
Replaced NOTAM(s) : N/A
Pilots May Contact : FORT WORTH (ZFW) ARTCC, 817-858-7503, 202-267-3333
Jump To: Affected Areas
Operating Restrictions and Requirements
Other Information
Affected Area(s) Top
Airspace Definition:
Center: On the COWBOY VOR/DME (CVE) 140 degree radial at 9 nautical miles. (Latitude: 32º45’56”N, Longitude: 96º48’15”W)
Radius: 2.5 nautical miles
Altitude: From the surface up to and including 2000 feet AGL
Effective Date(s):
From July 08, 2016 at 0335 UTC
To July 08, 2016 at 1130 UTC
6/2615
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NOTAM Text
Operating Restrictions and Requirements Top
No pilots may operate an aircraft in the areas covered by this NOTAM (except as described).
ONLY RELIEF AIRCRAFT OPERATIONS UNDER DIRECTION OF DALLAS POLICE DEPARTMENT ARE AUTHORIZED IN THE AIRSPACE
Perhaps they still believe they have an active situation?