Tracking [0] is frequently used by skydivers after close freefall formation manoeuvring ('relative work') to increase their horizontal separation before deployi

Tracking [0] is frequently used by skydivers after close freefall formation manoeuvring ('relative work') to increase their horizontal separation before deploying their canopies. https://en.wikipedia.org/wiki/Tracking_(skydiving) https://en.wikipedia.org/wiki/Tracking_(skydiving)