This remnant will be suspended between two granite pillars representing the Twin Towers and stand atop a pentagon-shaped base that has been etched to look like the Pentagon itself.
The front side is engraved with "Never Forget," and the remaining four sides each have a flight number of a plane that crashed that day.
To arrive at the Final Coords for this simple Multi, visit the site at the posted coords and answer the following questions:
North Coords: N 39 45.__ __ __
How many firefighters died on the day commemorated?
Add up the flight numbers of the four flights that crashed.
Subtract 83 from the sum of those two totals to get last three digits of North Coords. (Check Sum 13)
WEST COORDS: W 121 48. __ __ __
How many civilian and military personnel were killed in the attack on the Pentagon?
How many law enforcement officers were killed in the attacks on the WTC and Flight 93?
Add these two figures together and add 136 to get the last 3 digits of the West Coords. (Check sum 9).
The final is very close by, with easy parking. Initial contents of the cache include a “Wish I Was Caching” token, a Geocaching Bracelet, and a recycled deuce. FTF takes his pick.
You can validate your puzzle solution with certitude.