In mid to late 1966 (probably about Oct 1) when the boy's name call signs
replaced the serpent call signs in III Corps, the Vipers became Rods.  At the
time of the change in call signs they were flying O-1s and supported the 5th
ARVN Division, headquartered at Phu Loi, Binh Doung Province .  The 5th ARVN
Division TAOR included Binh Doung Province, Binh Long Province (TACP at Hon
Quan, later called An Loc) and Phouc Long Province (TACP at Song Be).  

Charlie Pocock, Viper-7/ Rod-7