April 26, 2013 4:32 pm Thunder Over Louisville Kicks Off the Kentucky Derby Can you feel the thunder at Thunder Over Louisville? Ali heads to the banks of the Ohio River to check out the Kentucky Derby’s kickoff event and Downtown Louisville’s biggest party. US & World Videos 1:07 Britney Spears spotted as authorities respond to alleged hotel incident 2:15 Prince William and Kate Middleton ‘going through hell,' friend claims (report) 8:01 Lady Gaga's outfit changes, Rihanna's bold looks and more iconic Met Gala moments 2:48 Taylor Swift fans react to Jake Gyllenhaal and Sabrina Carpenter's ‘SNL' appearance 2:05 Whoopi Goldberg reveals who will inherit her fortune