With Families And Kids Busy With Outdoor Activities And Vacations, Blood Donations Always Fall Off In The Summer. However, The Need For Blood Is Constant. Gwen Hunter With The American Red Cross In Johnson City Says The Blood Type Most Needed Is “O-Negative”. To Find Out When And Where You Can Give The Gift Of Life, Log Onto Www.Redcrossblood.Org And Put In Your Zip Code.