Petty Officer 1st Class Wayne Sperko, builder (left), assigned to Naval Mobile Construction Battalion 74, Charlie Company, observes Petty Officer 3rd Class Mikhail Gordon, builder, assigned to NMCB 74, Charlie Company, adding water to a concrete mixture and Builder Constructionman, assigned to NMCB 74, Detail Two, operating an electrically powered mixer during a training day at Camp Krutke. NMCB 74 is on deployment to Afghanistan supporting Operation Enduring Freedom.