a few thousand, having lost the ability to differentiate between each other. Each cluster of thetans gathered into one of the few remaining bodies that survived the explosion. These became what are known as body thetans, which are said to be still clinging to and adversely affecting everyone except Scientologists who have performed the necessary steps to remove them. A government faction known as the Loyal Officers finally overthrew Xenu and his renegades, and locked him away in "an electronic mountain trap" from which he has not escaped. Although the location of Xenu is sometimes said to be the Pyrenees on Earth, this is actually the location Hubbard gave elsewhere for an ancient "Martian report station". Teegeeack was subsequently abandoned by the Galactic Confederacy and remains a pariah "prison planet" to this day, although it has suffered repeatedly from incursions by alien "Invader Forces" since that time. In 1988, the cost of learning these secrets from the Church of Scientology was £3,830, or US$6,500. This is in addition to the cost of the prior courses which are necessary to be eligible for OT III, which is often well over US$100,000 (roughly £77,000). Belief in Xenu and body thetans is a requirement for a Scientologist to progress further along the Bridge to Total Freedom. Those who do not experience the benefits of the OT III course are expected to take it and pay for it again. Scientology doctrine Within Scientology, the Xenu story is referred to as "The Wall of Fire" or "Incident II". Hubbard attached tremendous importance to it, saying that it constituted "the secrets of a disaster which resulted in the decay of life as we know it in this sector of the galaxy". The broad outlines of the story—that 75 million years ago a great catastrophe happened in this sector of the galaxy which caused profoundly negative effects for everyone since then—are told to lower-level Scientologists; but the details are kept strictly confidential. The OT III document asserts that Hubbard entered the Wall of Fire but emerged alive ("probably the only one ever to do so in 75,000,000 years"). He first publicly announced his "breakthrough" in Ron's Journal 67 (RJ67), a taped lecture recorded on September 20, 1967, to be sent to all Scientologists. According to Hubbard, his research was achieved at the cost of a broken back, knee, and arm. OT III contains a warning that the