Fuel tanks jettisoned from aircraft in Southeast Asia…

[titanic3]

It wasn't just fuel tanks. In 1995 I spent my honeymoon in Vietnam. Yes that's right Vietnam vets. In Saigon or Ho Chi Minh City as they call it. I regularly heard the blap blap of Hueys over the city it was so evocative. Say what you want  but the Vietnamese knew a good chopper when they heard it.  More than that, it was clear they didn't like the Chinese and preferred the Americans Rather ironic that.

Call it Saigon instead of HO Chi Minh City. 

[Nefarious]

My curiosity has got the best of me... once again.

Trying to figure what kind of aircraft they came off of.

The large white tanks with little winglets, I would say those are 600 Gallon Center line tanks from Air Force F-4s. If they were indeed "left behind" the Air Force would be would the likely culprit.

http://www.angelfire.com/dc/jinxx1/Phantoms/F4ctank.jpg

The silver tanks in the bottom pictures... One is labeled 450 gallon USAF. I would venture to say that those were both jettisoned. The front one is the 450 gallon (as indicated), while the one behind it looks like a 370 gallon outboard tank off an F-4. Which would make it USAF once again as the USN rarely used the 370 gallon tanks.

http://www.angelfire.com/dc/jinxx1/Phantoms/F4wingtank.jpg