This is a replacement cache for the original Happy Anniversary that was placed May 1, 2003.
This cache was originally placed to celebrate the third anniversary of our pastime. Selective Availability was lifted by President Clinton on May 1, 2000, allowing civilian GPS receivers to display their positioning with much greater accuracy. Read the details here; (visit link)
Located in Sheppard's Bush Conservation Area in Aurora. There are a few different places to park, but the best one is probably at the north end. See the supplied waypoint.
The cache is hidden in an area that will probably cause your signal to dance around quite a bit, so be patient and your position should settle down eventually. You will be looking for an ammo box filled with an assortment of trinkets.