The Alvin Ailey American Dance Theater held its 17th Washington, D.C., Annual Opening Night Gala Benefit, which featured the Washington premieres of “Open Door” and “Exodus” — along with Alvin Alley’s “Revelations” — at the Kennedy Center’s Opera House Feb. 2. Afterwards, supporters and dancers went upstairs for dinner and more dancing. Proceeds from the gala will support Ailey’s Washington, D.C., programs, including the creation of new works, arts-in-education activities and scholarships to talented young dance students in the Washington area to attend the Ailey School in New York.