Pirates have invaded Earth on an airship and drastic measures are required. Such is the scenario of the Steampunk Fencing Day, at which kids ages 13 and older will grab foam “swords” and engage in an afternoon of adventurous play. Costumes are encouraged at the event, which will be held on June 2, 1–4 p.m., at En Garde Fencing in Santa Rosa. Admission is $30 and includes a half-hour fencing lesson.  Find out more at facebook.com/engardefencing.