As told by an Air Force retiree:
One reason the Services have trouble operating jointly is that they don’t speak the same language.
For example, if you told Navy personnel to “secure a building,” they would turn off the lights and lock the doors.
Army personnel would occupy the building and set up a checkpoint to control entry.
Marines would assault the building, capture it, and establish a defensive perimeter.
The Air Force, on the other hand, would take out a three-year lease with an option to buy.