Boy Scout Troop 3 of Derby will host a Spring Fling Dance featuring the band Flashback on Saturday, March 21 from 8 p.m.-midnight at Warsaw Park, Pulaski Highway, Ansonia. Cost is $20 per person (must be age 21 or older to attend). Bar set-ups, ice and coffee provided. Bring your own refreshments. For tickets call 203-606-9673 or purchase from a Boy Scout in Troop 3.