At our 2013 seminar in Ottawa, Kansas we had the chance to use a grass rig (brush truck) to support an "open relay" tanker (tender) loading site. The operation was part of our 2-hr water supply drill which culminated the 16-hr Rural Water Supply Operations Seminar that we delivered for the Franklin County Firefighters Association. The water source was a large pond located at a local church camp facility and provided about a 6-mile round trip for the rigs hauling water. Pomona Grass 3972 (250 gpm) drafted from the pond and filled a 2100-gallon dump tank from which Centropolis Engine 3851 (1,000 gpm) then drafted and loaded tankers (tenders). The fill site was one of two supporting the 2-hr drill and the crews did a good job of filling rigs quickly and getting them back on the road. Another example of keeping the process simple and working to improve your water supply operation with what you have.