Janeway uses one in the Star Trek: Voyager episode "Macrocosm". In the real world, the KA-BAR is an official combat knife of the United States Marine Corps. Katana A katana is a Federation sword of Japanese origin. The only major difference compared to the old sword of today is that the Star Trek version is foldable, thus occupying a minimum space when carried and stored. In the 2009 Star Trek reboot, Lieutenant Hikaru Sulu produces a folding katana with which to cut the lines of his parachute, having stated just before this that his hand-to-hand combat expertise is in fencing. Jem'Hadar Bayonet The Jem'Hadar often have bayonets attached to their plasma (also known as polaron-pulse) rifles. They employ these in close combat, or to execute prisoners. Often Jem'Hadar bayonets are chemically-enhanced, releasing a lethal nerve-agent on contact. Kar'takin These straight-bladed polearms are used by the Jem'Hadar in close combat. They were used by both Starfleet officers and Jem'Hadar in the Star Trek: Deep Space Nine episode "To the Death". The Kar'takin bear a resemblance to the Bardiche axe. Shock Blade This weapon delivers a taser-like jolt to whatever it strikes in combat. Holding the shock blade's trigger discharges a beam of neuro-electrical energy, with an effective range of 15 feet. Klingon Bat'leth (AKA betleH) The bat'leth is the Klingon double-sided scimitar/hook sword/lujiaodao hybrid-edge weapon, designed by martial arts enthusiast and Star Trek: The Next Generation effects producer Dan Curry. The bat'leth is a curved blade with spiked protrusions and handholds along the middle of the blade's back. In battle, the handholds are used to twirl and spin the blade rapidly. Klingon oral history holds that the first bat'leth was forged around 625 A.D. by Kahless, who dropped a lock of his hair into the lava from the Kri'stak Volcano, then plunged the fiery lock into the lake of Lursor and twisted it to form a blade. After forging the weapon, he used it to defeat the tyrant Molor, and in doing so united the Klingon homeworld. This first bat'leth was known as the Sword of Kahless' and was stolen by the invading Hur'q; an episode of Deep Space Nine revolves around an effort to recover the Sword of Kahless. The name bat'leth itself is a slight corruption of , which means "Sword of Honor" in Klingon. A "Valdris" blade was used in Colorado Springs, Colorado, in two 7-Eleven armed-robberies in