Carrying photography equipment and moving around in places that aren't up to code brings with it other hazards, too, ranging from electrical zaps to collapsing ceilings. Matthew Christopher, an urban explorer who lives in Manayunk and has published two books of his work (he didn't personally know Bunting), said he's on several occasions stepped through floors or on top of a nail, admitting that he's entered buildings well-traveled by urban explorers that were "objectively stupid" to be inside.