Soldiers Build Instant Runway On North Carolina Beach

The video describes the process of constructing an airfield at Marston Strip, North Carolina. Bulldozers level the field, and perforated steel is laid to create a runway capable of accommodating large aircraft like the B 19. The design allows grass to grow through the steel, camouflaging the runway. This efficient method reflects the army's efforts to advance their program.

What is the significance of the airfield being able to accommodate the B 19?

In what way does the army's construction method reflect modern efficiency?