Michael Pelkey and Brian Schubert became the first people known to have parachuted from a steep cliff, diving off of the 3,000 foot high El Capitan, a vertical rock formation in Yosemite National Park in California.
A USAF F-4C Phantom #63-7599 was shot down by a North Vietnamese SAM-2 northeast of Hanoi, in the first loss of a US aircraft to a Vietnamese SAM in the Vietnam War [REF].