[aerohead]

1) One source reports that the carbon footprint for manufacturing and transporting liquid Nitrogen to the end user is 79-grams/ liter. One-kilogram / 12.658-liters.
2) There'd be the carbon to extract the materials for drone manufacturing.
3) Carbon footprint to transport the materials to processors.
4) Ditto for processing into useful materials.
5) Ditto for transporting materials to the drone factory.
6) Ditto for manufacturing.
7) Ditto for distribution to market.
8) Ditto for purchasing.
9) Ditto for transporting drone operators into the forests.
10) Ditto for charging the drones in the field.
11) Ditto for housing the teams.
12) Ditto for feeding the teams.
13)............................................... ......................
14) As Earth continues to warm, the teams would have to move north to follow the beetles.