General Dynamics announced that two of its units - General Dynamics Robotic Systems and General Dynamics C4 Systems - have been awarded Defense Department contracts worth more than $18 million. On March 25, General Dynamics Robotic Systems (Westminster, Md.) was awarded a $6.1 million modification to an existing contract for the production of 33 M56 smoke generator systems and five gas turbine engines. Work will be performed in Westminster (M56 Systems) and Phoenix, Ariz. (M56 systems and gas turbine engines), and is to be completed by Jan. 2003. The U.S. Robert Morris Acquisition Center, Aberdeen Proving Ground, Md., is the contracting activity.