Be a blood donor on Saturday. Blood donations during summer months are low. LifeSource blood bank hopes to rebuild supply by holding a blood drive at the Homewood Fire Department, 17950 Dixie Highway, on Saturday, Aug. 26, from 10 a.m. to 4 p.m. for a blood drive. According to Eva Quinley, LifeSource regional executive director, over the past few weeks LifeSource has seen less than a three-day supply in critical blood types, including O-negative and O-positive. Donations from O-negative donors who can be universal donors are especially important. “The . . .