Senior Airman Walter Holder, a 455th Expeditionary Logistics Readiness Squadron vehicle maintenance journeyman, replaces O-rings on a water pump for a 455th Expeditionary Security Forces Squadron mine resistant ambush protected all-terrain vehicle at Bagram Air Field, Afghanistan, Oct. 3, 2012. The 455th ELRS tactical vehicle maintenance team works seven days a week, keeping pace with a steady flow of mundane vehicle repairs as well as critical upgrades which further enhance the safety of Bagram's tactical vehicle fleet.