New Orleans will receive $27.3 million in grants from the federal government to help cover some of the city's costs stemming from Hurricane Isaac.  The grants from the Federal Emergency Management Agency, or FEMA, were announced Wednesday. Some of the money will reimburse the city for labor and equipment for a variety of emergency protective measures including police patrols and operation of major drainage systems and pumps.  Other costs reimbursed will include debris and removal and cleaning of mud, silt and sand from street drainage catch basins.