What does this NOTAM mean? "high/low stationary reservation"

[poadeleted3]

There were quite a few NOTAMs like this when I checked wx on DUATS this morning. What is a "high/low stationary reservation", and what should we as pilots do about it? Stay away? Circle and enjoy the show?

New York Center (Ronkonkoma NY) [ZNY]: July NOTAM #36 issued by Central Alt Res Fac CA [CARF] DINO high stationary reservation within 15 nautical miles radius of 4307N/07607W 12000 - 15000 effective from July 21st, 2006 at 12:45 PM EDT (0607211645) - July 21st, 2006 at 01:45 PM EDT (0607211745)

 

[Steve]

A volume of airspace can be established for special use, usually military. Such airspace is known as a temporary airspace reservation. This reservation can be stationary or in motion, depending on whether its position remains fixed with relation to the surface of the earth or changes with time.

http://www.faa.gov/ATs/aat/ifim/ac91-70c03.htm

 

[poadeleted3]

Thank you very much