In the original Terminator movie Kyle Reese says that terminators are specialised "infiltration units" that are apparently "very hard to spot. He said that "the terminators were the newest, the worst." But in Terminator Salvation now all of the machines are called "terminators." They even have "moto - terminators." Which makes it seem like the people who wrote the movie "Terminator Salvation" were not even really paying attention when they saw the first movie.