Five Indiana-based companies, three of which are based in Carmel, have agreed to perform services for the Washington D.C,.-based Defense Intelligence Agency as part of a 10-year, $12.6 billion contract that was recently approved. The contract is called the Defense Intelligence Agency Solutions for Information Technology Enterprise III, or DIA SITE III. The companies are Leaf Software Solutions, Carmel; The Mako Group, Carmel; 3DGS, Carmel; Lifeline Data Centers, Indianapolis and infosentience, Bloomington.