Hawaii Department of Transportation issued the following announcement on May 18.
The Hawaii Department of Transportation (HDOT) notifies the public that the United States Marine Corps will be conducting aircraft training activities on and around Dillingham Airfield (HDH) on Tuesday, May 19, 2020 from 1 – 6 p.m. The training will include multiple aircraft landing and taking off during the scheduled timeframe. The surrounding community around the airfield may experience additional aviation noise during the exercises.
HDH is owned by the U.S. Army and the military maintains first priority for air and land operations and training at the facility. HDH tenants have been notified of the exercises.
Original source can be found here.