Kids can cheer on visiting members of the Armed Forces as they compete in a tug-of-war tournament (10:30am). At 12:15pm, take your little ones to see Sesame Street muppets Elmo and Rosita performing “What I Am” with the Quantico Marine Corps Band. Stick around to listen to vocal performances by the Manhattan Dolls (2pm) and Voca People (4pm). Free. All ages.