About 350,000 bikers gathered in the nation's capital to participate in the rally, which has attracted prestigious guests, including President George Bush, in the past, The Washington Times reported.

"First thing, this is about supporting America and our folks in the military, past and present. It's about love of country, love of bikes. People have a calling to be here," said Pete Ries, who has been to the event at least six times.

Money raised through raffles and other events is donated to needy veterans and their families.

"We donate our time, no one gets any compensation and 100 percent of the money we raise goes to help vets or their families," said Artie Muller, Army veteran and Rolling Thunder founder.