The holidays are upon us, and everywhere you turn there are signs of the season. For most of us this is a joyful time -- a time to relax and reflect with family and friends -- a time to put aside our differences and be thankful for our health and hopeful for the future. But, for an alarming number of Bay Area families, seniors and others, this is an extremely stressful time of the year. The San Francisco Food Bank estimates that one in four children does not get enough food to cover their daily nutritional needs in our city and 150,000 people are living with the threat of hunger. This holiday season, the Food Bank will try to feed more than 20,000 local families who are having a difficult time putting enough food on the table. But they will not be able to do it without our support.