without releasing it; the resulting blast can destroy most natural objects within a radius. The overload process is marked by a distinctive sound that increases in volume and frequency until it is deactivated or it detonates. Personal phasers can be made small enough to fit in the user's palm and still be lethal. Larger and more powerful phaser rifles are commonly issued to security personnel. Ship-mounted phasers have a similar range of functions on a larger scale: The phasers on the USS Enterprise could be used as an "anti-missile" defense to destroy incoming projectiles, stun entire city blocks full of people, destroy cities, and even destroy entire asteroids up to a given size. The ship's phaser system was also said to be capable of destroying continents. Although starships are frequently shown firing their phasers while at Warp speeds across the various Star Trek series, this was generally avoided during *The Next Generation*, and the Star Trek: The Next Generation Technical Manual stated that it was impossible. The Star Trek: Deep Space Nine Technical Manual, on the other hand, describes an "ACB-jacketed beam device" as the mechanism which allows phasers to function at Warp speeds. According to later series, phasers release a beam of fictional subatomic particles called "rapid nadion", which are then refracted ("rectified") through superconducting crystals. The Star Trek: The Next Generation Technical Manual indicates that the superconducting crystals used in phasers are called , which is Japanese for "sea of mystery", and the phrase is written in the original glyphs. This was a homage to the 1990 anime series Fushigi no Umi no Nadia, known in North America as Nadia: The Secret of Blue Water. The phasers that appeared in the 2009 reboot Star Trek appear similar in shape to the classic phasers, but fire singular energy pulses instead of a sustained stream of them, in a fashion similar to semi-automatic weapons. This version of the phaser seems to only have two settings, stun and kill, which fire blue and red colored pulses respectively. The barrel of the weapon is two-sided, one being colored red and the other blue to indicate the current setting: the user must manually rotate to the other output to use the other setting. A similar change was seen in the starship-mounted phaser banks, which also fire single energy pulse instead of continuous streams. In Star Trek Beyond, the barrel sides of the sidearm