Having said that I do believe there are some ways in which very bright flashing lights could be used tactically in the future. It is possible to literally knock someone out cold within a few seconds with the right pattern of flashing lights. You in the US probably don't have the pleasure of watching any of Derren Browns TV programmes. He is a psychological illusionist and one of his tricks involved setting up a fake photo booth and getting someone to sit in it, within a few seconds of the lights starting to flash he was out cold, they flew him a few thousand miles to another country, woke him up (still in the photo booth) and filmed him with secret cameras, to him no time had passed. (none of his tricks are "faked" - and he explains how he does a lot of them)