Open Grid
This cache does not require any special equipment but may prove to be a challenge to locate.
Given the high profile location and the time it may take to find, the suggested wardrobe would be of the orange vest style.
(This cache previously required the finding of 4 "GRID" caches listed on Geocaching.com in order to obtain clues for a password needed to log. Open Grid is now cross listed on GC.com and the password requirement has been removed)