Great picture! Where and when was this picture taken? Da Nang or Chu Lai?
Truth be told, I only recall loading 750 pound stuff while with VMFA-122 in Da Nang. Could be just my 64 yr old memory, but it seemed Chu Lai specialized more in close air support. Maybe because the birds could quickly take off without waiting for airliners, Air Force, and whatever.
Lots of Hot Pad, Snake and Nape, 2.75" FFAR and Zunis. Hot and sweaty stuff during day, and working at night brought the rocket attacks.