http://www.usaaf.net/chron/42/nov42.htm says:
(Tenth Air Force):
CHINA AIR TASK FORCE (CATF): 10 B-25s and 20+ P-40s, the largest CATF effort in China to date, hit shipping and harbor installations at Hong Kong, firing warehouses and claiming 2 freighters and numerous barges sunk; a large force of fighters intercept during the return trip but are driven off by the escort; the P-40s and B-25s claim several airplanes shot
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