Reply Mayor Dan Rivera speaks, with Gov. Charlie Baker behind him, in the wake of the 2018 Merrimack Valley gas explosions. ( (Jenna Fisher/Patch) LAWRENCE, MA — Lawrence Mayor Dan Rivera was named the new CEO of MassDevelopment, the agency said Thursday. Gov. Charlie Baker nominated Rivera and the agency's board voted unanimously to confirm him at their meeting Thursday. The Democratic mayor, an ally of the Republican governor, will succeed Lauren Liss as CEO of the semi-public development and finance agency. The agency helps finance housing, cultural and business development. Subscribe "I...