motorsport racing series Sacrifice fly, a play in baseball Semi-finals, a round in elimination tournaments Scuderia Ferrari, an Italian Formula One team Other uses San Francisco (sans-serif typeface), Apple's sans-serif and corporate typeface United States Air Force Security Forces, the ground combat, force protection and military police force of the U.S. Air Force United States Army Special Forces, special operations organization of the U.S. Army , a French breed of horse A former hull classification symbol for a fleet submarine in the United States Navy See also Garland SF-01 and Garland SF-03, fictional racing cars in Future GPX Cyber Formula