Oakdale resident and Escalon Christian Reformed Church member John Bergwerff has been donating blood since 1977 and said his O negative blood type is a universal donor. The church was host site for a Feb. 13 blood drive. Bergwerff is shown here with American Red Cross phlebotomist Shavona Bernal administering a ‘power red’ on a special machine that is used to safely take two units of red blood cells during one donation while returning plasma and platelets to the donor.