"Tranquilizers: [...] astronauts keep a few tranqs on hand in case anyone goes all suicidal or psychotic in space. NASA recommends binding the individual’s wrists and ankles with duct tape (ever the space traveler’s friend!), strapping them down with a bungee cord and, if necessary, sticking them with a tranquilizer. Sure, it hardly makes for a civilized evening aboard ISS, but it beats someone blowing the hatch because they think they saw a something crawling on one of the solar panels." - Steven Perez from Bookmarklet