The most common cause of compressor stalls in early versions of the Pratt & Whitney JT9D engines powering the 747-100/200 was the use of excessive reverse when the airplane had slowed too much for the degree of reverse used. This was exacerbated if it was a high-time engine. Typically a compressor stall in these engines back then was not written up.
COPYRIGHT 2004 The Gale Group Inc. Human intelligence, or HUMINT, is the gathering of information through human contact. It is, along with signals intelligence and imagery intelligence (SIGINT and IMINT respectively), one of the three traditional means of intelligence gathering.
Open Source Intelligence (OSINT) in Joint and Coalition Operations pen Source Intelligence, or OSINT, is unclassified information that has been deliberately discovered, discriminated, distilled and disseminated to a select audience in order to address a specific question. It provides a very robust foundation for other intelligence disciplines.