rittenhouse was not an aggressor. >> you described rosenbaum as acting erratic, right? >> from all of the moments that i was around that you could notice, yes. >> you described rosenbaum as erratic and rittenhouse as chain smoking, yes? >> i suppose you could say nervous, i guess, would be a fairer way to say it. >> reporter: but prosecutors say this grainy fbi aerial surveillance video will show rittenhouse did move toward rosenbaum while the defense says it shows rosenbaum hid behind cars before chasing rittenhouse who opened fire. the most graphic of the videos showing the moment rosenbaum was shot four times. >> ooh! >> reporter: and shortly after, when he was carried by bystanders and driven away. a detective confirming, rosenbaum was unarmed. >> so, no gun? >> no. >> no knife? >> no. >> no bat? >> no. >> no club? >> no.