The headline coordinates take you to an information board. The information you need is in the paragraph about J.T.
A and C answers are a in the bracket
Third digit of year = A
Number of letters in 9th word in first sentence = B
Second digit of year in = C
Welcome memorial see virtual stage 1
Number of letters in last word = D
Number of letters in first word on 6th line = E
Number of letters in first word on 8th line = F
CHECKSUM ABCDEF = 33
The cache can be found : N 50° 51. A B D W 3° 23. C E F