Lockheed Martin announced today that Senior Vice President (SVP) of Government Affairs Christian Marrone has decided to resign, effective Feb. 28, for personal reasons. Greg Walters, vice president of Legislative Affairs, has been named acting SVP, effective immediately.

Walters joined Lockheed Martin in 2004 and has led several critical initiatives, including the legislative component of campaigns to reestablish the LM EO Overhead and GPS III Satellite franchises. Prior to joining the company, he served 14 years as a staff member of the House Appropriations Committee and four years in the Department of Defense.

He graduated from University of Pittsburgh with a bachelor’s in Economics and received his MBA from Johns Hopkins University.