After having asked for and being granted permission to a Texas military base, the Pentagon has issued an order to all Defence Department bases and installations to ban access to their sites. At issue is the panoramic street level views that are made freely available on the Internet. "[It shows]where all the guards are, it shows how the barriers go up and down, it shows how to get in and out of buildings, and I think that poses a real security risk to our military installations," Air Force Gen. Gene Renuart, chief of the U.S. Northern Command, said. Google spokesman Larry Yu said that the images of Fort Sam Houston where taken down immediately when requested and that "It is against our policy to request access to military bases for the purpose of capturing imagery in Street View," saying also that a Google crew mistakenly asked for access to a base, breaking Google policy.