(Photo courtesy of M3 Consulting Group)

The UAS in flight.

Cotton farmers in Arizona and elsewhere have for years been dealing with an invasive pest known as the pink bollworm moth.

But the U.S. Agriculture Department thinks it’s a couple years away from eradicating the insect, by introducing sterilized moths to the population.

Eoin Davis works for the agency in the Pink Bollworm Mass Rearing Facility in Phoenix.