HOLIDAY MESSAGES Cheryl McKinley, center, wife of Air Force Gen. Craig McKinley, chief of the National Guard Bureau, talks about the role of the Guard at a holiday event for children hosted by Dr. Jill Biden, right, wife of Vice President Joe Biden, at their home at the Naval Observatory in Washington, D.C., Dec. 1, 2010. Sheila Casey, left, wife of Army Chief of Staff Gen. George W. Casey Jr., also discussed the importance of supporting military families during the holidays. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 310913-D-ODT55-777.jpg Photo Gallery