The Garden of Gethsemane Homeless Shelter aims to be Covington’s safety net, the place that prevents those who have lost everything from falling through society’s cracks."I’m trying to sound the trumpet, to alert people to the homeless problem. We don’t want chronic homelessness here; we don’t want to become another Atlanta with its increased crime. We need to put our hands on it now," said Rev. Clara Lett, the shelter’s director.Employees from Lendmark Financial Services, a subsidiary of BB&T, believe so strongly in Lett’s efforts they’ve pledged to volunteer 172 hours of their time from