Ahhhh....the old LAPES drop. They don't do them anymore, sadly.
The AF made 37 LAPES runs after it no longer possible for cargo aircraft to remain aground longer than 3 minutes at Khe Sanh.
The story of the men, munitions, aircraft (B-52 runs, C123s, C-130s during the siege is really something.
https://www.historynet.com/air-power-in-the-siege-of-khe-sanh/