Research to reduce jet noise will get a $2 million boost due to an amendment by U.S. Rep. Rick Larsen, the congressman’s office announced this week.

The increase is included in the annual military spending bill.

In an effort to make Growler jets quieter, the Navy has been researching engine seals or “chevrons” that reduce the harshness of the interaction between exhaust and ambient air, according to the release. Additionally, chevrons do not impact fuel consumption or engine performance.

Supporting research into quieter engines is one portion of Larsen’s seven-point plan to address the concerns of communities surrounding Naval Air Station Whidbey Island, he said in the release.

If it proves to be successful, the technology could produce quieter engines for both sailors and families living near bases where these aircraft are stationed, such as Outlying Field in Coupeville; the airfield is a source of hot controversy on Central Whidbey.

In 2015, Larsen requested the Congressional defense committees be briefed on the Navy’s efforts to develop noise reducing chevrons for the F414 engine that powers the Super Hornet and Growler.