Six weeks ago, the future of public safety in the town of Duck was uncertain, but now town leaders are optimistic after getting a response from the U.S. Army Corps of Engineers. The town's public safety facility has sat on federal land for decades and is leased through USACE."What we've heard is that they're willing to work with us on a 50-year lease," said Monica Thibodeau, the mayor of Duck.For eight years, the town has been planning major fac…