Col. David Berg, 55th Wing vice commander, speaks during

Col. David Berg, 55th Wing vice commander, speaks during a Birthday Ball celebration at the CenturyLink Center in Omaha, Neb., Sept. 10, 2017. The ball recognized the Air Force’s 70th anniversary, 100 years of aviation and Nebraska’s 150th anniversary. The 55th Wing, who is the host unit at Offutt, typically hosts a birthday ball every year to celebrate its heritage, but this year they’ve expanded their scope to highlight all three of these momentous occasions. (U.S. Air Force photo by Zachary Hada)