Night vision
Blue Tape: The Universal Light Dimmer
In this 'Postscript' from Peter Swanson he follows up on preserving your night vision with the best way to dim all those pilothouse lights - painter's tape.
Congressman Seeks To Cut Night Vision 'Red Tape' For USCG
Rep. Duncan Hunter (R-Calif.) says he is maddened by the fact that Coast Guard helicopters are equipped with night-penetrating Electro-Optical Sensor Systems, but can’t use them because of a “quirk in the federal bureaucracy.”