The SOP also provides each gun salute a two-man gun crew (one loader, one gunner) for each cannon, as well as a five-man "staff" of soldiers to give the fire commands. The staff includes an Officer in Charge, a watchman (who marks the intervals and signals each gun to fire), an assistant watchman (as a backup), a counter (who keeps track of the number of rounds fired and signals the last round to the Officer in Charge), and a Non-Commissioned Officer in Charge (who marches the battery into place as well as signals the backup cannon to fire in case another gun misfires).