a veterinarian from a neighboring mennonite colony to subdue their victims, then raping them. eight of the accused were found guilty of rape, one escaped from the local jail before the end of the trial, and the veterinarian was found guilty of being an accomplice to the rapes. according to at least three residents of the colony, a local prosecutor, and a local journalist, these "ghost rapes" continue despite imprisonment of the men convicted in the 130 original rapes. rape drugs main article: date rape drug a date rape drug, also called a predator drug, is any drug that can be used as incapacitating agent to assist in the execution of drug facilitated sexual assault (dfsa). the most common types of dfsa are those in which a victim ingested drugs willingly for recreational purposes, or had them administered surreptitiously: it is the latter type of assault that the term "date rape drug" most often refers to. "the findings by du mont and colleagues support the view that alcohol plays a major role in drug-facilitated sexual assault. previously, weir noted that cases of drug-facilitated sexual assault were frequently found to involve alcohol, marijuana or cocaine, and were less likely to involve drugs, such as flunitrazepam (rohypnol) and gamma-hydroxybutyrate, that are commonly described as being used in this context. similar findings have been reported by others, including hall and colleagues, in a recent retrospective study from northern ireland".— butler b, welch j (3 march 2009). "drug-facilitated sexual assault". canadian medical association journal. 180 (5): 493–4. doi:10.1503/cmaj.090006. pmc 2645469. pmid 19255067. "knockout gas" a fictional form of incapacitating agent, sometimes known as "knockout gas", has been a staple of pulp detective and science fiction novels, movies and television shows. it is presented in various forms, but generally is supposed to be a gas or aerosol providing a harmless way of rendering characters quickly and temporarily unconscious without physical contact. (this is in contrast to chloroform, a liquid anesthetic — itself a common element in genre fiction — which requires physically subduing a victim before being applied.) a number of notable fictional characters created in the early 20th century (both villains and heroes) were associated with the use of knockout gas; these include fu manchu, dr. mabuse, doc savage, batman, and the avenger. a military knockout gas called the "gas of peace" is an important plot device in h.g. wells' 1936 movie things to come. it had become a familiar trope by the 1960s when it was utilized in the x-men comics. a famous example recurs in every opening sequence of the british tv series the prisoner (1967–68). to this list the character sterling archer has recently been added. the u.s. army psychiatrist james s. ketchum, who worked for almost a decade on the u.s. military’s top secret psychochemical warfare program, relates a story relevant to the concept of a “knockout gas” in his 2006 memoir, entitled chemical warfare secrets almost forgotten. in 1970, ketchum and his boss were visited by cia agents for a brainstorming session at his maryland laboratory. the agents wanted to know if an incapacitating agent (his specialty) could be used to intervene in the ongoing hijacking of a tel aviv aircraft by palestinian terrorists without injuring the hostages. accordingly: we considered the pros and cons of using incapacitating agents and various other options. as it turned out, we could not imagine a scenario in which any available agent could be pumped into the airliner without the hijackers possibly reacting violently and killing passengers. ultimately, the standoff was resolved by other means. arguably, the use of fentanyl derivatives by russian authorities in the 2002 moscow hostage crisis (see above) is a real-life instance of deployment of a "knockout gas". of course the criterion that the gas reliably render subjects temporarily and harmlessly unconscious was not fulfilled in this case as the procedure killed about 15% of those subjected to it.