Blessings are not always obvious. A flea-infested dormitory in a Nazi concentration camp during World War II illustrates the point.Westwood Church of Christ preacher Coy Hathcock, keynote speaker at Tuesday’s One Nation Under God prayer breakfast sponsored by the McMinnville Evening Exchange Club, told the story of two sisters separated from their family and interred in a German concentration camp. The younger sister was always encouraging her older sibling to try to remain positive despite their miserable conditions and the constant threat of death in a Nazi gas chamber.As the Allies were advancing on the Nazis in the spring of 1945, the filthy dormitory shared by the sisters and scores of other prisoners became infested with fleas.