One afternoon, while Frank and Margaret are supposed to be watching Kim, the boy wanders off into a minefield.
A helicopter-assisted rescue is successful, and once on safe ground, Trapper hugs the boy, to the delight of gathering 4077th personnel.
Meanwhile, a truck pulls up, driven by Sister Teresa, who runs the local orphanage.
A model of a Bell UH-1 Iroquois hangs from the ceiling in Henry Blake's office.
This model helicopter first flew in 1956 (Wikipedia article), over two years after the end of the Korean War.