Excellent write up and thanks for taking the time to clear that up.
I had put in a post about Water Air Tanker / Hvy Air Tanker but advised by VICFire that those aren't used in the UK, but glad to see them anyway in-game, sure would beat the usual 30+ firetrucks swatting wild-land fires down the road from me ( As I live within a Forest / Huge Wild-land area )
ARFF / Heavy Machine and then Truck Drivers licence will be my next upgrades anyway ( thanks also for the Dozer Trailer UNLOCK mention from the Reg-Firestation ) I would of taken ages to have figured that out otherwise.
Interesting to see the T.D.Licence had stumped so many, from what I saw after watching an old James Bond movie earlier, the Quint used 2 people to drive, 1 at front and the other, in this case Bond, at the back.
The Crew Cab Semi even stumped our local Firestation Officer !!! ( all fire engines have crew cabs! But what is this semi part? ) and ALL firemen are encouraged to learn to drive the engines.
Thanks again for all the help WinWin