WESTFIELD — Shirley Adams, a resident of Klondike Avenue in Westfield, already knows what an F-15 fighter jet sounds like.
“It’s a good ‘Sound of Freedom,’ ” she said Tuesday during the open-house portion of an in-person environmental hearing hosted by the Air National Guard preparing for new, more powerful F-35 fighter jets at the Barnes Air National Guard Base. “We’d like to know how much louder it is going to be. And what is it going to sound like at my house.”