21.   All four doors have pockets.

22.   But the doors have one particularly nice feature, a remote entry system that can be programmed to suit several drivers.

23.   By federal mandate, cockpit doors will have to be totally redesigned within the next year or so to make them more secure.

24.   Cockpit doors would have to be strengthened to prevent unauthorized entry, and commuter aircraft also would have to be fitted with secure doors.

25.   Doors should have dead bolts.

26.   Doors should have multiple locks.

27.   Doors also had great ornamental knobs and hinges cast in bronze.

28.   Each door has a rectangular slot for the food tray.

29.   Even black is good, especially if the door has a big brass knocker and a shiny thumb latch.

30.   Eventually, the door had to be clamped shut.