R.I.P.: George Vujnovich, Dead at 96
"The Serbian-American and Pittsburgh native was an officer of the OSS,
the precursor of today's CIA, when about 500 pilots and other airmen
were downed over Serbia in the summer of 1944 while on bombing runs
targeting Hitler's oil fields in Romania, according to U.S. government
field station files.
Vujnovich is credited with leading the so-called Halyard Mission in what
was then Yugoslavia. It was the largest air rescue of Americans behind enemy lines in any war."