Any effort to photograph a crime scene begins prior to arriving at the location. In addition to making sure that all the necessary equipment is available, photographers must ensure that batteries are charged and that the equipment is in good working condition. Some agencies have enough camera equipment so that all investigators have their own gear. However, other agencies do not and investigators are forced to share equipment. Sharing photography equipment presents so many potential problems that it is recommended investigators belonging to cash-strapped agencies invest in their own photography gear. The headaches avoided by possessing their own gear will far outweigh the cost.