The Washington Fair hopes to set a new world record for the most water rockets launched simultaneously. People of all ages are encouraged to take part. The rockets will be launched Friday, Aug. 3, at 11 a.m. at the fairgrounds in the motor sports arena. Giesike said representatives from SCOPE (Science and Citizens Organized for Purpose and Exploration), a nonprofit group that promotes science education and innovation, will be available to help all of those interested. Giesike said the current record for most rockets launched is 442. Fair officials hope to launch at least 550.