reporter: was the good guy legally carrying a concealed weapon when a shooting breaks out. i hear shooting down a long dimly lit hallway. i take a peek then shoot. so can a good guy with a gun stop a bad guy with a gun? an active shooter? our miguel marquez answers that question as he participates in an active shooting simulation. you ll only see it here next. what s that, broheim? i switched to geico and got more. more savings on car insurance? yeah bro-fessor, and more. like renters insurance. more ways to save. nice, bro-tato chip. that s not all, bro-tein shake. geico has motorcycle and rv insurance, too.