Members of the 3rd and 20th Aircraft Maintenance Units congratulate newly selected dedicated crew chiefs Aug. 4, 2014, by presenting them with a personalized set of chalks for their designated aircraft at Cannon Air Force Base, N.M. Being selected for this position is a demanding yet high honor, designated for those who have displayed exceptional initiative, management skills and leadership ability. (U.S. Air Force photo/Airman 1st Class Chip Slack)