(AP) — A rural water district in southeast Nebraska and local firefighters are locking horns over the fire department's use of fire hydrants connected to the rural district's system. The Lincoln Journal Star reports (http://bit.ly/1gVaHNF ) that Cass County Rural Water District No. 1 has sent certified letters to local fire departments — including Plattsmouth, Nehawka and Murray — saying hydrants on its system are not to be used for fighting fires.