I am not so sure that this name is actually as poor as initial comments would lead us to believe.
Of course we naturally look at the name and think "no its Security Guard, not Guard Security".
Security Guard is singular and individual, Guard Security could be the service provided.
There is electronic security and there is manned guarding security;used to promote an alternative/addition to electronic security (inc. CCTV), in the form of manned guarding, "Guard Security" could have an application and therefore an end-user value well over and above a reseller figure.
{Edit - beaten to the post by Izopod!}