To solve this one, you need to work out how the five images below are connected.

F=the number of letters in the name of person A (two words).
G=the number of letters in the name of person B (three words).
H=the number of letters in the name of person C (two words).
I=the number of letters in the name of person D (two words).
J=the number of letters in the name of person E (two words).
K=the number of letters in the noun (in its singular form) which connects and describes all 5.
The cache can be found at : N55 01.Y W001 41.Z
Where Y = G x I + F + K - H and Z = (J + F) x (G + K - H) + I

You can validate your puzzle solution with certitude.