When I was flying a lot in the Navy JAG (uh, as a passenger, not like in the TV show) something happened that I've always wondered about.
(1) On a Alitalia flight into New York from Rome, emergency vehicles drove alongside the plane when it landed. Why? When I rode up on the hotel elevator with the flight crew would it have been a breech of ettiquette to have inquired? Always wondered about that, since there was no indication there was anything wrong.
Military pilots always seemed to be more accessible... I remember a couple of times them volunteering to me after a seemingly odd approach that, "Hey, I was just doing what they told me to do." (Nose-dive descent into airport in Crete, low altitude circle back over the Med before completing landing near Marseilles for instance. Also remember flying over Spain at low altitude (cool) because "too much fuel had been loaded and we need to burn it off" lol)
(2) Why don't any of the sound packages reproduce that "buzzing" sound I've noticed jet engines making, especially when climbing to cruise altitude?
(3) Understanding neither is particularly realistic, when flying a airliner in MSFS2K is it closer to what pilots do to use navaids or GPS for the AP? (In other words, is the GPS more like an FMC, or do pilots really manually set frequencies and courses for navaids one by one and fly by those?)
Thanks for satisfying my curiosity!