You may have your aircraft wrong- the C-17 can carry 1 M1 (you were right there), and the C-5 can carry 2. The C-130 cannot carry an M1 as it is smaller than the C-17 and its cargo hold cannot accommodate an M1. The hold of a C-130 is about 40 feet long, 10 feet wide, and 9 feet high. A quick look at the internet says that the average fire engine is about 35 feet long, 9 feet wide, and 9 feet high. It would be a tight fit- and platform trucks wouldn’t fit, as they’re taller and often longer. Now, let’s look at the C-17. At 88x18x12.5, we could fit 2 type 1 fire engines or a single aerial aboard. That’s still not much on a fire where airlifting apparatus is necessary, impressive as it is. So now we turn to the C-5- at 121x13.5x19, it’ll be possible to fit 3 type 1 engines or 2 smaller aerials. Obviously very few departments have access to aircraft capable of lifting a single fire engine, and there are VERY few situations where airlifting apparatus makes sense. I’d would be fun to have, but I don’t think it makes sense for us to add.