Very interesting story about the Escape and Evasion portion of their training.
When I visited Subic in 2002, we hiked around the southern hills of the area. Our hike guides showed us how to start fires the same way shown in the above website. They also showed us how to drink water from the reeds.
I attended short briefings from the US commander and the Aetas who worked in the JEST (Jungle Environmental Survival Training) in Subic during the mid-1980s. I was able to visit the site again in 1998 and in 2003 after the Americans left and it was already run by the Subic management as a tourist attraction. There is an option to take an hour-long trek in the jungle for those who want to commune with the mud and insect bites of the jungle (which I also undertook).
The Aetas taught the same things during all three visits, with minor variations. The USN and USMC trainees who had to take the JEST course had to spend two to four weeks in the Subic jungle (usually without their own survival supplies) in order to pass the course. The regular tourist just gets a shallow taste of the entire thing. As I understand it, many of our own AFP jungle fighters also had to go through a similar survival course.