CALLING ALL BLOOD DONORS. MARSH REGIONAL BLOOD CENTER OFFICIALS HAVE ANNOUNCED SUPPLIES OF O-NEGATIVE BLOOD ARE EXTREMELY LOW IN THE TRI-CITIES AND MARSH OFFICIALS STRONGLY ENCOURAGE THOSE WITH THAT BLOOD TYPE TO DONATE IN THE COMING DAYS. DONORS WHO GIVE BLOOD DURING SEPTEMBER WILL BE ELIGIBLE TO WIN TWO TICKETS TO AN ATLANTA BRAVES GAME AND A GAS GRILL.