noncommissioned officer in afghanistan. command sergeant, thank you for your time. it's an honor to have you here. >> it's good to be here. >> let me ask you about the friendly fire incident richard was talking ability. i'm not a military expert. it seems there are a bunch of different, simple things that try to prevent friendly fire incidents from reflective patches and tape to gps beacons, that sort of thing. how is it that the afghan troops weren't identified as friendlies? >> we sent an assessment team out. the system is in place. for whatever reason, the system didn't work. we killed friendly troops. we will relook at the system to figure out what happened. i don't think it's communications problem. you will find the standard operating procedures weren't followed. that's my opinion when these things happen. it's almost always we didn't