Five different Navy SEAL units are testing "transcranial electrical stimulation," reports Military.com, with one command's spokesperson saying the early results "show promising signs... we are encouraged to continue and are moving forward with our studies." The device's manufacturer says the number of devices being tested is "in the double digits," and believes the "neuro-priming" device could improve shooting performance , adding "it's kind of all about just training a little bit smarter." schwit1 quotes their report:Admiral Szymanski says experiments found that operators monitoring screens reportedly maintained peak performance for 20 hours -- rather than experience the usual drop-off in concentration after 20 minutes.