Complex sentence: A presidential emergency proclamation on 8 September 1939 spurred the rapid construction of new facilities to prepare the island for additional operating to include additional barracks, a new assembly and repair hangar, administration building, a dispensary, the control tower, laundry, and theater.
Split into simpler sentences: A presidential emergency proclamation on 8 September 1939 spurred the rapid construction of new facilities to prepare the island for additional operations. This included additional barracks, a new assembly and repair hangar, administration building, a dispensary, the control tower, laundry, and theater.