Here’s why you saw a helicopter flying over Central Pennsylvania

Marine One with US President Joe Biden onboard, approaches to land at Fort McHenry in Baltimore, Maryland on January 30, 2023. – Biden is in Baltimore to highlight funding from the infrastructure law. (Photo by Mandel NGAN / AFP) (Photo by MANDEL NGAN/AFP via Getty Images)

YORK COUNTY, Pa. (WHTM)– A helicopter will be flying over part of Central Pennsylvania performing aerial blackfly suppression Friday.

The York County Office of Emergency Management posted on Twitter that a white with blue and redd stripes helicopter with the tail number N660HA will be flying over the main stem of the Susquehanna River.

The helicopter will make its way south to York after a start at 8 a.m. in Northumberland County.

The reason for the suppression is to reduce the adult black fly population during the spring and summer, according to the Department of Environmental Protection (DEP). An estimated…