Time-lapse of monitors setting up a fire effects plot

The Fire Effects crew from North Cascades National Park is seen in this time-lapse video filmed over a two-hour period placing fire monitoring plots just outside fire perimeter of the Paradise Fire in Olympic National Park.

The fire that started May 15 in the Olympic peninsula rain forest has burned 1,781 acres.

I wonder to what degree the intensive human activity in the plot while establishing it affects the results.