221st Signal Company See the 221st Signal Company on the web at http://221stsignal.com/index.html Donald Fedynak, (dfedynak@verizon.net), wrote "some additional info on the 221 Signal Company (Pictorial).  The 221 was the manpower organization for the Southeast Asia Pictorial Center or 'SEAPC'.  I served with the 221 Signal Company in Vietnam from January 1969 to January 1970.  Attached are 221, SEAPC photos:" 221st sign   Mamasan truck   Motor pool   Shower room   Anybody wanting to "look back on those exciting days of yesteryear," with the 221st Signal Company (Pictorial) or SEAPC (Southeast Asia Pictorial Center) can join 30 to 40 other infamous photographers and lab rats on a FaceBook site cleverly named "221st Signal Company (Pictorial)."  Go to https://www.facebook.com/groups/46843739077/  (Provided by Roger Hawkins.)   (Posted September 22, 2010; updated Aug. 6, 2018.)