Ronald Reagan wants Americans to give blood. "I wanted to do whatever I could for the American Red Cross," the former president said this week after recording a public service announcement seeking donors. In the announcement, he said: "When you give blood, you give another birthday party. Another wedding anniversary. Another day at the beach. Another walk across a field. Another night under the stars. When you give blood, you give another holiday with the family. Another drive after supper. Another talk with a friend. Another laugh. Another cry. Another hug. Another chance."