Read as much as you want on BostonGlobe.com, anywhere and anytime, for just 99¢.

Westfield

Massachusetts jet breaks sound barrier over Vermont, N.H.

Continue reading below

A Massachusetts Air National Guard fighter jet flying a routine training mission over the New Hampshire-Vermont border has inadvertently broken the sound barrier. The National Guard said the pilot of the F-15C Eagle was completing qualification training in a controlled military airspace Thursday when he flew at just under 700 miles per hour at 20,000 feet above sea level. The area is not among those designated by the Air Force for supersonic flights. Residents of the Vermont city of Bradford and the New Hampshire communities of Lyme and Orford may have heard the resulting sonic boom. Dispatchers at the Hanover, N.H., police department told the Valley News of Lebanon, N.H., that they received 15 calls related to the boom. (AP)

Loading comments...

You have reached the limit of 5 free articles in a month

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week