Tracking is regarded as an essential life saving skill for all freefall skydivers engaging in relative work with others, allowing the jumpers to gain horizontal separation after building a formation and before opening their parachutes. Accordingly, the greater the number of skydivers on a jump, the better their tracking skills must be. In addition to having to track a longer distance after break-off (tracking away for separation before opening), they also have to be more aware of other jumpers around them and have to be able to track in a straight line away from the center of the formation.