Lance Corporal Diomar Guano, range coach on Marine Corps Logistics Base Barstow, Calif., teaches children with the Excelsior High Desert Young Marine program how to shoot weapons on an Indoor Simulated Marksmanship Trainer here, April 12. Active-duty Marines here gave the Young Marines professional military education during their time on MCLB Barstow. - Lance Corporal Diomar Guano, range coach on Marine Corps Logistics Base Barstow, Calif., teaches children with the Excelsior High Desert Young Marine program how to shoot weapons on an Indoor Simulated Marksmanship Trainer here, April 12. Active-duty Marines here gave the Young Marines professional military education during their time on MCLB Barstow.