Lance Cpl. Cedric Hargrove enters data into Global Combat Support System-Marine Corps uses a laptop in a motor bay at The Basic School aboard Marine Corps Base Quantico, Virginia. Thanks to a recent GCSS-MC software update, Marines will be able to make better use of the logistics and resource management software system in limited-connectivity environments. - Lance Cpl. Cedric Hargrove enters data into Global Combat Support System-Marine Corps uses a laptop in a motor bay at The Basic School aboard Marine Corps Base Quantico, Virginia. Thanks to a recent GCSS-MC software update, Marines will be able to make better use of the logistics and resource management software system in limited-connectivity environments.