Florida Trend’s list of the 350 biggest companies in Florida includes four Volusia County firms: NASCAR, Brown & Brown, International Speedway Corp. and Consolidated-Tomoka Land Co. TopBuild Corp., representing the assets and operations of the former Masco Installation and Other Services businesses with combined 2014 revenue of $1.5 billion, became an independent, publicly-traded company on June 30, 2015. The defense arm of Sparton, the largest producer of sonobuoys in the world is based here in Volusia County. Teledyne Oil and Gas, the world leader in subsea electrical and fiber optic interconnect systems for offshore oil and gas, defense, oceanographic and telecommunication applications is based in Daytona Beach, and Hawaiian Tropic sun care products are manufactured in Ormond Beach. Boston Whaler, Edgewater Power Boats and Everglades Boats are all based in Edgewater. Raydon, one of the world’s leading developers of simulation training products and solutions is headquartered in Port Orange. Medtronic, a global healthcare products company, and Frontier Communications’ Florida Contact center are located in DeLand, which is also home to some of the world’s leading parachute manufacturers.