[Skadoosh]

James K wrote,

I have been told that the new lights are so bright they blind everyone (but not, presumably, the carrier) so it is only necessary to "cuff 'im, Pete". Or that the brilliant beam renders the BG helpless, so he falls on the floor and twitches.

You should read what the late, great Pat Rogers has to say about that in his Swat Magazine arrticle "Let There Be Lights. Really Bright Lights".

James K wrote,

One of my instructors had the idea that if, say, you were checking out a warehouse at night, the best thing to do was simply to turn on the lights, while moving away from the switch bank.

Some times, that's just not possible.