Luke takes San Marcos. Floating the river was a success! 🇺🇸🇺🇸 #dogsofinstagram #dogoftheday #goldenretriever #goldens #MemorialDay #USA #ThankYou #MemorialDayWeekend #AlwaysRemember #ArmedForces #HonorOurTroops #Veteran #Veterans #HonorThem