OE-2 Bird Dog
OE-2 Bird Dog (Cessna 321)- Used by the US Marine Corps in the late 1950s, there were only 27 of this observational aircraft built. The Bird Dog was used during the Vietnam War for reconnaissance and forward air control. The OE-2 was a redesigned version of the OE-1; after 1962 it was renamed O-1C. Variants of the L-19/O-1 Bird Dog were used from approximately 1950 until 1974, when it was retired in the US.