JSOC Pilatus U-28A Spectre circling @ 14,500' a few km east of Henderson, NV (Las Vegas vicinity) for 2.25 hrs
The U-28A is a modified, single-engine Pilatus PC-12 aircraft and is part of the Air Force Special Operations Command manned, airborne intelligence, surveillance, and reconnaissance fleet.
More on the U-28A →
http://www.af.mil/About-Us/Fact-Sheets/Display/Article/104607/u-28a/
U-28A is def not a Shack!