One demonstrator helps another flush her eyes with water after police pepper-sprayed a group of protesters, who were trying to get into the National Air and Space Museum. (Jose Luis Magana/AP)

If you need to know what’s open and what’s not this Columbus Day, check out this list of closings, restrictions and transit news.

Protesters with the ‘Occupy D.C.’ movement are planning to overstay their permit. The demonstrators’ permit with the National Park Service expired at 10 p.m. Sunday. On Saturday, protesters affiliated with the like-minded ”October 2011” protest group clashed with guards after a group tried to enter the National Air and Space museum and more than a dozen people were sprayed with pepper spray.

More stories after the jump:

Despite Arlington County’s affluence, people are struggling to make ends meet. In one week in mid-September, the Arlington Food Assistance center served more families than ever in its 24-year history.

Unique Harris disappeared from her home in Southeast a year ago. Her family was left with no answers.

Teachers are increasingly using home visits to connect with withdrawn students. Arlington County teachers were among the small group to pioneer the idea in Northern Virginia several years ago. This year, instructors in the District have followed suit.

Stay with PostLocal for these and other news updates from across the region.