YOU MAY NOT KNOW IT, BUT EVERY TWO SECONDS SOMEONE NEEDS BLOOD. RIGHT NOW, IT’S TIME TO ROLL UP YOUR SLEEVES AS TRI CITIES BLOOD BANK OFFICIALS SAY THERE IS AN IMMEDIATE, CRITICAL NEED FOR TYPE O NEGATIVE BLOOD. ACCORDING TO GWEN HUNTER WITH THE JOHNSON CITY DONOR CENTER, THE SUPPLY OF TYPE 0 NEGATIVE HAS BEEN DOWN TO LESS THAN A 24-HOUR SUPPLY FOR OVER A WEEK. THE JOHNSON CITY DONOR CENTER WILL BE OPEN WEDNESDAYS FROM 8 A.M. UNTIL 1 P.M., MONDAYS FROM 2:30 P.M. UNTIL 7 P.M, AND ON SATURDAY, MAY 17TH FROM 9 A.M. UNTIL 1:30 P.M. EVEN IF YOU DON’T HAVE TYPE 0 NEGATIVE BLOOD, YOU’RE URGED TO GIVE THE GIFT OF LIFE.