A small hatch topside permitted entry and egress.
What he needed was something like a forcefield - whatever that might be - to prevent ingress but permit egress.
Its interior layout with a ladder and hatch arrangement was designed to permit rapid egress of passengers and crew for emergencies on the launch pad.
She opened it only wide enough to permit her egress and it closed with a thunk behind her.
Large wooden doors, banded with steel, permitted entrance and egress.
The stairways are wider than in the original building to permit faster egress.
The hole was large enough to allow someone to unlock the window, sliding it up to permit ingress and egress.
No one was hurt during the panic; it was a legal rule that theater doors be made large enough to permit easy egress during a fire.
To permit access and egress, however, the belt is connected to the door rather than to the body pillar separating the two side windows.
Currently, the hamlet consists of a single business - a tourist inn - and a few small houses clustered along or near the gravel roadway which permits vehicular ingress and egress.