<Li> A Helibase is the location from which helicopter - centered air operations are conducted . Helibases are generally used on a more long - term basis and include such services as fueling and maintenance . The Helibase is usually designated by the name of the incident, e.g. Trail Creek Helibase . </Li> <Li> Helispots are more temporary locations at the incident, where helicopters can safely land and take off . Multiple Helispots may be used . </Li> <P> Each facility has unique location, space, equipment, materials, and supplies requirements that are often difficult to address, particularly at the outset of response operations . For this reason, responders should identify, pre-designate and pre-plan the layout of these facilities, whenever possible . </P> <P> On large or multi-level incidents, higher - level support facilities may be activated . These could include: </P>

Who has overall command of an emergency incident