Whether you’re travelling on land or in the air, this year’s Fourth of July festivities will likely put a damper on your travel plans.

In addition to the slew of expected road closures that usually accompany Independence Day, National Airport will also halt flights for a portion of the evening. Dulles and Baltimore/Washington International Thurgood Marshall Airport are not impacted.

DCA will suspend commercial flights from 6:15 p.m. to 7:45 p.m. to accommodate military aircraft that’ll be flying overhead as part of President Donald Trump’s Salute to America celebration, and again from 9 p.m. to 9:45 p.m. for the fireworks show, according to a statement from the Federal Aviation Administration. The FAA directed air travelers to check with their airline for flight changes.

In recent memory, Fourth of July festivities on the Mall haven’t included flyovers, so there hasn’t been a need to halt flights. But it isn’t unheard of. The agency suspended flights in and out of DCA for about an hour in May 2015 during a flyover celebrating the 70th anniversary of the end of World War II, according to FAA spokesperson Marcia Alexander-Adams.

It’s unclear if the FAA has previously grounded commercial flights explicitly to accommodate a firework show. A spokesperson for the Metropolitan Washington Airports Authority told WTOP that the size and location of the display show was a factor in the decision.

There will be two fireworks displays launching from separate spots on the Mall this year, officials confirmed last week.

Jeff Reinbold, the National Park Service’s superintendent of National Mall and Memorial Parks, said that it will be “a longer show than we’ve done before—35 minutes total, and it will be quite a display.”