for Captain Jack, who experiences "maximum damage" when his lover Ianto is killed. Davies chose to have Ianto die so that Jack would be damaged enough to sacrifice his grandson in order to destroy the same aliens. When reuniting with the Doctor in the 2007 series of Doctor Who, he is told "don't you dare" when pointing a gun, and scolded when contemplating snapping the Master's neck. Witnessing the murder of his colleague Owen in Torchwood, Jack shoots his killer in the forehead, killing him in an act of swift revenge. Whilst the Doctor scolds Jack for joining the Torchwood Institute (an organisation he perceives as xenophobic and aggressive), Jack maintains that he reformed the Institute in the Doctor's image; Jack himself had initially been critical of the moral failings of a 19th-century Torchwood. Actor Gareth David-Lloyd describes the 19th century Torchwood as "quite ruthless and quite evil" and "on the other side" from Jack and the Doctor. Through Jack, whose perspective is widened by his experiences in other planets and times, the organisation was able to grow less jingoistic. One academic article, which compares Torchwood to the American drama series 24, opines that Jack's attitudes make the show's ethos largely antithetical to that of 24. Because Jack explores the "complexity of negotiating differing worldviews, cultural values, beliefs, and moral codes" through a framework established by the Doctor, to "value life, support democratic principles and egalitarianism, and protect those who cannot protect themselves", consequently "The world of Torchwood is depicted, not as the dichotomous "us" (or United States) and "other" of Jack Bauer's 24, but as the omnipolitical, omnisexual, omnicultural world of Jack Harkness." Porter finds, however, that like Bauer, Jack saves the world using similarly morally grey means when he tortures Beth the sleeper agent, in "Sleeper", in order to avert an interplanetary attack. Although science fiction heroes have, Porter argues, "grown greyer over time", Jack represents as of Children of Earth a culmination of this trend, resulting in a full "devolution/deconstruction of the traditional hero". In Children of Earth, Jack has to sacrifice his own grandson to save the world. Barrowman was concerned that the storyline could have made the character unpopular. He believes however that Jack was given the tough decision on how to save humanity; the actor says "when I read all of the stuff he had to do, I had to look at it from