Workers pluck tea leaves using cutters at a tea estate in Nilgiris district, India, Wednesday, Sept. 25, 2024. (AP Photo/Aijaz Rahi)

Hector Xu, CEO of Rotor Technologies, gestures during an interview at the company's hanger where unmanned semi-autonomous helicopters are being assembled, Monday, Nov. 11, 2024, in Nashua, N.H. (AP Photo/Charles Krupa)

Christian Nowosiadly and his son Logan, 5, watches as a a hanger at the Rotor Technologies , Monday, Nov. 11, 2024, in Nashua, N.H. (AP Photo/Charles Krupa)

A Rotor Technologies unmanned semi-autonomous helicopter sprays a payload of water during a test flight over Intervale Airport, Monday, Nov. 11, 2024, in Henniker, N.H. (AP Photo/Charles Krupa)

Test pilot Joao Magioni, seated left, talks with production manager Brett Worden while preparing a flight of a Rotor Technologies unmanned semi-autonomous helicopter in a hanger at Intervale Airport, Monday, Nov. 11, 2024, in Henniker, N.H. (AP Photo/Charles Krupa)

A Rotor Technologies unmanned semi-autonomous helicopter flies near Pat's Peak ski area, rear, during a test flight over Intervale Airport, Monday, Nov. 11, 2024, in Henniker, N.H. (AP Photo/Charles Krupa)

Avionics Technician John Beto installs components into the cockpit of an unmanned semi-autonomous helicopter being built in a hanger at Rotor Technologies , Monday, Nov. 11, 2024, in Nashua, N.H. (AP Photo/Charles Krupa)

With communications and control components installed where a pilot would sit, Brett Worden, production manager at Rotor Technologies, carries a spray boom following a test flight of an unmanned semi-autonomous helicopter at Intervale Airport, Monday, Nov. 11, 2024, in Henniker, N.H. (AP Photo/Charles Krupa)