Sean P. Sheridan, field information technology manager with Microsoft, gives senior leaders of 4th Marine Logistics Group, Marine Forces Reserve, a tour of Microsoft’s San Francisco Sales Office, Sept. 26, 2015. Marines with 4th MLG gathered in San Francisco for the 4th MLG Senior Leadership Seminar to discuss leadership challenges within 4th MLG and to learn how civilian corporations apply leadership principles within their organizations. (U.S. Marine Corps photo by Cpl. Ian Leones/Released)