I was on the Yorktown in the early 60's. Was TAD for two weeks at the Naval Station waiting for her to return from Hong Kong. I went into Olongopo once. Never went off base, or ship in P.I. again. Years later I worked in the States with a Phillipino who sent his father a banner for his running for mayor there, when he got the package it was full of rocks and dirt. Sorry, but that's what I saw.