Co-op placements range from small start-up companies to large multinational companies, including many Fortune 500 corporations. The program also places students with government agencies, branches of government, nonprofits, and non-governmental organizations. Northeastern students can be found interning in the United States Congress, the White House, United Nations, and at NASA. Student placements usually last six months and most of the time, students are paid. Students may live in the university residence halls on campus during co-op employment, and the university currently leases housing for students co-oping in New York City, San Francisco, Seattle and Washington, D.C. and assists elsewhere.