Which color is better to use?
U.S. Air Force Staff Sgt. Jonathan Hamilton, a 35th Force Support Squadron instructor, returns to an old page using a newly-installed SMART Board during an Airman Leadership School class at Misawa Air Base, Japan, Jan. 25, 2019. The SMART Boards replaced overhead projectors and whiteboards, allowing students to access digital notes from previous classes and better retain the material. (U.S. Air Force photo by Airman 1st Class Xiomara M. Martinez)