The Olney Ballet Theatre 20011 Gala celebrated 50 years of Mary Day’s Classic The Nutcracker, Sept. 17 OBT’s Artistic Director Pat Berrend was long associated with Mary Day, founder of The Washington Ballet. She recalled that Miss Day’s Nutcracker opened at Constitution Hall with the National Symphony Orchestra. The vibrant gala included choreography by Aaron Jackson and performances by many of Miss Day’s dancers now with leading dance companies. OBT is a non-profit performing arts, educational organization providing training to young dancers, who perform in the theater before live audiences.