in contrast to Federation blue, and operate with complete silence (in the movie, no sound effects). Presumably this is to enhance the combat effectiveness of Klingon boarding parties. It is not made clear whether Klingon transporters are more risky for the boarders, but the warlike Klingons are likely not to be concerned about transport casualties in combat. Whenever a person or object is transported, the machine creates a memory file of the pattern. This has been used at least once in every Star Trek series to revert people adversely affected by a transport to their original state. Various episodes of Deep Space Nine (DS9) and Voyager (VOY) have introduced two anti-transporter devices: transport inhibitors and transporter scramblers. Inhibitors prevent a transporter beam from "locking on" to whatever the device is attached to. Scramblers distort the pattern that is in transit, literally scrambling the atoms upon rematerialization, resulting in the destruction of inanimate objects and killing living beings by rematerializing them as masses of random tissue; this was gruesomely demonstrated in the DS9 episode "The Darkness and the Light". Transporter operations can also be curtailed when either the point of origin and/or the intended target site is moving at warp velocities. In the TNG: "The Schizoid Man", a "long-range" or "near-warp" transport was required as a transporter beam cannot penetrate a warp field. (In the 2009 Star Trek film Kirk and Scotty beam aboard while the Enterprise is traveling at warp, however, the movie takes place in an alternate continuity, thus not affecting the Prime Continuity used in all previous media and the Star Trek Online computer game.) To deposit an away team on the planet Gravesworld while at the same time responding to a distress signal, the Enterprise would only drop out of warp drive just long enough to energize the transporter beam. Geordi La Forge personally performed the delicate operation, which involved compensating for the ship's relativistic motion. After materializing, Deanna Troi commented that for a moment she thought she was trapped in a nearby wall, to which Worf replied, "For a moment, you were". In later stories (TNG: "The Emissary" and TNG: "The Best of Both Worlds"), it was confirmed that the transporter would work at warp only if the sending and receiving sites were moving at equal velocities. In his book The Physics of Star Trek, after explaining the difference between transporting information and transporting the actual