and the motives have varied from either, as you mentioned, an insurgent planted into the security forces or someone who has had other mental or emotional issues that has forced them to act this way. >> obviously the concern is going to be that these americans were specifically targeted, noncombatants. any indication that they were picked on purpose? i know you're saying it's early in the investigation but in any of the other incidents that we've had that are like these, were noncombatants tar ge geted? >> they've obviously been targeted today. for reasons we're not quite clear of at the moment. we had a shooting of a german photographer last month from an afghan policeman. he told colleagues he was upset about a u.s. air strike that happened in or around his village some months earlier. >> jeremy, thank you very much. i'm asking because we've been