The OSI feature describes how Air Force investigative units received and documented UFO reports during the Sign, Grudge and Blue Book era, including District 17 work at Kirtland Air Force Base.
This source provides institutional context for why Kirtland appears in Blue Book-era reporting.
It supports the archive's description of Kirtland as an Air Force investigative-channel case.
The source is contextual and does not replace the case file or Condon-era discussion.