Water Balloon party helps keep Mesa company staff members cool during the heat wave By FOX 10 Web Staff Published June 23, 2017 FOX 10 Phoenix Share Copy Link Email Facebook Twitter LinkedIn Reddit MESA, Ariz. (KSAZ) - A company in Mesa tried to beat the heat by moving up their 4th of July celebration to Thursday. VIDEO: FOX 10 Phoenix Photographer Dave Stermon captured the party, which involved water balloons as a way to keep the staff cool.