A land seismic survey requires substantial logistical support; in addition to the day-to-day seismic operation itself, there must also be support for the main camp for resupply activities, medical support, camp and equipment maintenance tasks, security, personnel crew changes and waste management. Some operations may also operate smaller 'fly' camps that are set up remotely where the distance is too far to travel back to the main camp on a daily basis and these will also need logistical support on a frequent basis.