Mighty Swell Sparkling Cocktails signs deal with Tampa Bay Buccaneers Bucs Nation has new reason to 'Fire the Cannons!' as a partnership between Mighty Swell Spiked Seltzer and the Tampa Bay Buccaneers is announced for the upcoming season. Recently introduced at retail stores throughout Florida, Mighty Swell is an award-winning spiked seltzer company based in Austin, Texas. Founded in 2016, this independently owned company continues to secure a spot among the top 15 spiked seltzer brands in the country. Mighty Swell is known for using cold-brewed sugar alcohol and natural white grape juice to create a refreshing low-calorie, low-sugar beverage perfect for sipping under the sun.