support themselves so they fall down. >> if you're at midrange or long range and you're armed? >> again you've got to get a stable shooting situation. you know it's not like you're going to just draw your weapon and start firing. it's not a competition match. so you want to stay behind cover, because once you've introduced a firearm into the mix, obviously you'll be targeted. the other thing that's of concern here is, once the event's over, if you've reconciled it you've got to make sure that i understand when police do arrive, they won't be able to sort through immediately what just happened. so you're at risk. and you've got to be able to make sure that they're not going to engage you, thinking that you're the shooter. >> that's exactly right. if there's blood on the ground, you've got a gun in your hand you're in trouble potentially. >> exactly. >> what do you think of this advice from the police chief of washington, d.c.? you never hear police officers say this, that you should get involved potentially. do you think that's good advice? >> i think there's two things, tucker. i think that basically this is predicated on her being privy to intelligence. she's not operating in a vacuum. she's privy to the presence of