These are P-51 Mustangs from the US Air Force 8th Fighter Bomber Group at Kimpo Airfield, also known as K14, in October of 1950. Photo taken by LTC (USAF Ret) Harvey W. Gipple.
<a href="//commons.wikimedia.org/w/index.php?title=User:Beatnavy90&amp;action=edit&amp;redlink=1" class="new" title="User:Beatnavy90 (page does not exist)">Beatnavy90</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>