Found the bit about the M42 Duster - it's in the Osprey book Armour of the Vietnam Wars...
It describes the M42 as a pretty rare beast - many US troops never even saw one, however the Dusters were invariably placed in positions where their firepower was needed, resulting in the crews seeing a lot of action. During enemy attacks the Dusters were priority targets for the enemy and always drew heavy fire as the enemy tried to destroy them.
Apparently Duster crews spent a lot of time on road security and convoy escort duties as well as firebase security. To ease the boredom the Duster crews frequently carried tranistor radios and cassette players on board so the crew had some music. ACcording to the author of the book Jimi Hendrix was the music of choice during firefights.
Phan Rang 1967... three Airborne soldiers who had completed their one year tour spent their last night on the base before shipping out in the morning. They had spent the last year operating in the mountains and jungle far from roads and base camps, but as experienced infantrymen they were put on perimeter guard for their last night.They were posted next to a Duster.
Airborne - "What is it?"
Duster crew - "It's a Duster, an M42"
Airborne - "You guys Armoured cav?"
Duster crew - "Naw, we're ADA"
Airborne - "AD what?"
Duster crew - "Air Defence Artillery"
Airborne - "Looks like it can really rock and roll"
Duster crew - "Want to see it mow some grass?"
Airborne - "Sure"
The Duster crew fired off four long bursts into the bush...
Airborne - "Bet it draws a lot of fire"
Duster crew - "No lie, GI"
The airborne soldiers picked up their kit and walked away to find somewhere further away from the Duster to spend their last night.
