U.S.A. Olympic Swimmers Natalie Coughlin and Kim Vandenberg with the military training dog unit during a USO tour stop at Naval Station Rota, Spain, October 7, 2013. (USO photo by Cherie Cullen)

While in Spain, the two Olympic medalists spent time with troops and their families (see slideshow below) to thank them for their service, share insights on what it's like to compete in Olympic Games and encourage youth to follow their dreams.

See more USO photos listed at USA Patriotism!