 It is seen in "The Name of the Doctor" <ref></ref> that as a TARDIS dies, its 'dimension dams' can break down causing a 'size leak' wherein the exterior dimensions of a TARDIS begin to expand to match its inner dimensions.Fitting their generally defensive nature, Time Lord weapons technology is rarely seen, other than the staser hand weapons used by the Guard within the Capitol.Stasers (possibly a portmanteau of stunner and laser, as they are used to stun targets) can be lethal energy weapons, specifically designed to prevent the unwanted regeneration of rogue Time Lords; staser beams also shatter the crystalline structure of non-organic targets.