LANGLEY AIR FORCE BASE, Va. -- Col. Kevin Altman, 1st Mission Support Group commander, gives a proclamation for a tree planting ceremony on behalf of the 1st Fighter Wing commander, Brig. Gen. Mark Barret, here April 29. The ceremony was to celebrate both Arbor Day and Earth Day and to show the Air Force's support of the environment. (U.S. Air Force photo/Senior Airman Christopher L. Ingersoll)