At least, you don't see it unless you are in the U.S. Marine Corps Combat Logistics Battalion 46, where they use MV-22 Ospreys—dual-rotor aircrafts that can switch between aeroplane and helicopter mode on the fly—to lift artillery pieces.
In this case, that is an M777 howitzer, a 3,175kg, 10 metre beast that requires five people to operate. That guy overlooking the airlift operation is U.S. Marine Corps Staff Sgt. Christopher Malloy, at the Landing Zone Sandhill, in Twentynine Palms, California, July 10, 2009. [Flight Global—Photo by Lance Cpl. Kelsey J. Green, U.S. Marine Corps.]