The Cache Is Not At The Posted Coordinates
The United States Secret Service uses codes names for
US Presidents, First Ladies, and their families.
The use of code names was original for security purposes
when sensitive electronic communications were not encrypted.
Today the code names simply serve for clarity and tradition.
White House Police Force, 1923
Decode the “Not So Secret” Code names to find the cache.
Sunnyside / Lace / Rawhide / Mogul
Volunteer / Muse / Renegade
Rat / Searchlight / Lancer / Squirrel
Renaissance / Marvel / Timberwolf / Lark
1 = Trump 6 = Kennedy
2 = Obama 7 = Nixon
3 = Truman 8 = Clinton
4 = Bush 9 = Johnson
5 = Reagan 10 = Carter
You can validate your puzzle solution with certitude.