By SCOTT SONNER, Associated Press RENO, Nevada (AP) — Environmentalists have filed a notice of intent to sue the U.S government to block plans to build up to 11,000 miles (17,700 kilometers) of fuel breaks they contend would violate the Endangered Species Act in a misguided effort to slow the advance of wildfires in six Western states. Leaders of four conservation groups say the Bureau of Land Management's