BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//archive.cryptologicfoundation.org//NONSGML kigkonsult.se iCalcrea
 tor 2.30.10//
CALSCALE:GREGORIAN
METHOD:PUBLISH
UID:b744e2b9-a3eb-4217-ad18-f9bde1b30ce8
X-WR-CALDESC:20 December 1969: The capture of the North Vietnamese notebook
 s which are on display in the NCM's Vietnam exhibit. \n\nOn December 20\, 
 1969\, soldiers of the U.S. Army's 1st Division were on patrol in Binh Duo
 ng Province of the Republic of Vietnam (South Vietnam) and spotted an ante
 nna wire protruding from the ground. What they actually discovered was one
  of a well-developed network of tunnels of the Democratic Republic of Viet
 nam (North Vietnam). Inside was a cache of over 2\,000 intercepted U.S. an
 d South Vietnamese voice transmissions. They also captured 13 of the 18-pe
 rson communications unit with receivers and other equipment of Chinese\, V
 ietnamese\, and U.S. origin. These notebooks provided the North Vietnamese
  and Viet Cong with information on the location of allied units\, disposit
 ion of forces\, and other importance intelligence.
X-WR-RELCALID:ffa9a6ea9151a19c7499f9d4b7cdb86c
X-WR-TIMEZONE:America/New_York
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:STANDARD
TZNAME:EST
DTSTART:20271107T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
RDATE:20281105T020000
END:STANDARD
BEGIN:DAYLIGHT
TZNAME:EDT
DTSTART:20270314T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
RDATE:20280312T020000
RDATE:20290311T020000
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
UID:b58413ec-acaf-4c91-9f48-d43ffb7a07e2
DTSTAMP:20260425T140806Z
DESCRIPTION:20 December 1969: The capture of the North Vietnamese notebooks
  which are on display in the NCM's Vietnam exhibit. \n\nOn December 20\, 1
 969\, soldiers of the U.S. Army's 1st Division were on patrol in Binh Duon
 g Province of the Republic of Vietnam (South Vietnam) and spotted an anten
 na wire protruding from the ground. What they actually discovered was one 
 of a well-developed network of tunnels of the Democratic Republic of Vietn
 am (North Vietnam). Inside was a cache of over 2\,000 intercepted U.S. and
  South Vietnamese voice transmissions. They also captured 13 of the 18-per
 son communications unit with receivers and other equipment of Chinese\, Vi
 etnamese\, and U.S. origin. These notebooks provided the North Vietnamese 
 and Viet Cong with information on the location of allied units\, dispositi
 on of forces\, and other importance intelligence.
DTSTART;TZID=America/New_York:20271220T000000
DTEND;TZID=America/New_York:20271220T235900
LOCATION:
SUMMARY:20 Dec 1969: Anniversary of the Capture of North Vietnamese Noteboo
 ks
END:VEVENT
END:VCALENDAR