Atlantic City's Mayor Warns of Insolvency by April Without Aid

``"Cash flow runs out April 29," Guardian told reporters Wednesday during the New Jersey State League of Municipalities conference in his city... If the city runs out of cash, it won't be able to borrow to stay afloat, Guardian said. Moody's Investors Service grades the city's debt Caa1, seven steps below investment grade. Standard & Poor's ranks it B, five levels into so-called junk.''