Tales of Suspense (Marvel, 1959) #93
Cover pencils by Jack Kirby, inks by Frank Giacoia. "Within the Vastness of Viet Nam!", script by Stan Lee, pencils by Gene Colan, inks by Frank Giacoia.
Iron Man helps the US Army in Vietnam test some inventions of his designed for military use; After a successful test, Iron Man's told that the real reason he was asked to come was so that he could destroy a fortress known as Hill 38, a laboratory where a communist called Half-Face lives.