Official caption: “Mekong Delta, Republic of Vietnam. US Navy Gunner’s Mate Third Class Barry Johnson returns enemy fire with the M-60 machine gun on board his US Navy River Patrol Boat (PBR). The enemy opened fire on the PBR as it moved along a canal near Tan Dinh Island during Operation Bold Dragon III, 26 March 1968.”
U.S. Navy Photo 428GX-K46404
Note the C-ration can used to keep the ammo belt in line without an assistant gunner, a common hack in Vietnam.
There is also another from the same angle.
U.S. Navy Photo 428GX-K46403
Note the locally-made River Div 532 (Navy River Division Five Three Two) patch, a PBR group of 10 boats that typically worked from moored gator mother ship USS Harnett County (LST-821) in the Mekong Delta.
Marolda and Dunnavent mention 532 at least twice in their work on the Brown Water Navy, most notably in this section, covering operations in Feb. 1969’s Operation Giant Slingshot on the Vam Co Dong River:
River Division 532 commanded by Lieutenant George Stefencavage was one of the most successful units in Giant Slingshot. Between 8 February and 4 April, the PBR unit killed more than 100 of the enemy while suffering the loss of two PBRs and four Sailors. Stefencavage and over half of the men in his command were wounded during the period. On 28 February, in a typical action, the PBRs surprised and dispersed a Viet Cong ambush force but then took heavy fire from another position nearby. Without hesitation, Stefancavage, even though he was already wounded in several places, led his command against the threat and silenced the remaining guerrillas. The Navy awarded him a Silver Star for his bravery.
CDR Stefencavage (Moorhead ROTC ’52) retired from the Navy in 1984, with his last command being the XO at Philadelphia Naval Base. He passed in 1990.